(en)The present invention provides a method and compositions for high throughput screening of genetically modified photosynthetic organisms for plasmic state. The present invention provides methods of producing one or more proteins, including biomass degrading enzymes in a plant. Also provided are the methods of producing biomass degradation pathways in alga cells, particularly in the chloroplast. Single enzymes or multiple enzymes may be produced by the methods disclosed. The methods disclosed herein allow for the production of biofuel, including ethanol.

1.ApplicationNumber: US-15643208-A
1.PublishNumber: US-2009246766-A1
2.Date Publish: 20091001
3.Inventor: MAYFIELD STEPHEN
O'NEILL BRYAN
MENDEZ MICHAEL
MIKKELSON KARI
POON YAN

4.Inventor Harmonized: MAYFIELD STEPHEN(US)
O'NEILL BRYAN(US)
MENDEZ MICHAEL(US)
MIKKELSON KARI(US)
POON YAN(US)

5.Country: US
6.Claims:
(en)The present invention provides a method and compositions for high throughput screening of genetically modified photosynthetic organisms for plasmic state. The present invention provides methods of producing one or more proteins, including biomass degrading enzymes in a plant. Also provided are the methods of producing biomass degradation pathways in alga cells, particularly in the chloroplast. Single enzymes or multiple enzymes may be produced by the methods disclosed. The methods disclosed herein allow for the production of biofuel, including ethanol.

7.Description:
(en)CROSS-REFERENCE
This application claims priority to and the benefit of the following U.S. Provisional Applications: U.S. Ser. No. 60/941,452, filed Jun. 1, 2007, entitled of “USE OF PHOTOSYNTHETIC ORGANISMS TO GENERATE BIOFUELS” by Mayfield et al; U.S. Ser. No. 61/070,384, filed Mar. 20, 2008, entitled “USE OF GENETICALLY MODIFIED ORGANISMS TO GENERATE BIOMASS DEGRADING ENZYMES” by Mayfield et al.; and U.S. Ser. No. 61/070,437 filed Mar. 20, 2008, entitled “HIGH THROUGHPUT SCREENING OF GENETICALLY MODIFIED PHOTOSYNTHETIC ORGANISMS” by Mayfield et al. Each of these prior applications is incorporated herein by reference.
INCORPORATION BY REFERENCE
All publications and patent applications mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference.


BACKGROUND OF THE INVENTION
Fuel is becoming increasingly more expensive. Also, fuel refinery is associated with the generation of pollutants and global warming. There is an increasing need in the industry to find cheaper, safer, and more environmentally unharmful ways to generate fuels. The development of means to produce fuel from biological material is an essential component of the future energy landscape. One of the most important elements in the production of fuel from biologic materials is the ability to digest or reduce certain molecular structures, such as cellulose, to molecular species recognizable as substrate for fuel generating processes, such as fermentation.
Molecular biology and genetic engineering hold promise for the production of large quantities of biologically active molecules that can be used to produce such fuels. For example, production of enzymes capable of breaking down organic materials into fuels hold promise to address the increasing needs for alternative fuels. A primary advantage of using genetic engineering techniques for producing such enzymes is that the methods allow for the generation of large amounts of a desired protein. In many cases, the only other way to obtain sufficient quantities of biological materials from non-engineered secretion sources is by purifying the naturally occurring biological material from cells of an organism that produce the agent. Thus, prior to the advent of genetic engineering, enzymes capable of degrading organic materials could only be isolated by growing the organism, typically a bacterial or fungal species, in large quantities and extracting the protein. Such procedures are often complex and economically prohibitive for use in fuel production.
Although genetic engineering provides a means to produce large amounts of a biological material, particularly proteins and nucleic acids, there are limitations to currently available methods. Bacteria provide an environment suitable to the production of such enzymes; however, byproducts produced by some bacteria would contaminate fuel sources. Thus, even where bacteria can be used to produce the biological material, additional steps such as purification or refining may be required to obtain biologically active material and/or bio-fuel. Furthermore, the use of non-photosynthetic systems requires the addition of costly sugar or other organic carbon sources to feed the recombinant organism. Additionally, there is typically a large capital investment associated with building fermenters.
Recombinant proteins also can be produced in eukaryotic cells, including, for example, fungi, insect cells and mammalian cells, which may provide the necessary environment to process an expressed protein into a biologically active agent. However, these systems typically suffer from the same cost prohibitions (sugar/organic carbon sources and fermenters). Thus, a need exists for methods to conveniently produce enzymes that are biologically active, can produce large quantities of enzymes and/or provide a host organism which is compatible with production of degradative enzymes.
SUMMARY OF THE INVENTION
Presented herein are compositions and methods for the production of biomass degrading enzymes and biofuels. The inventions disclosed herein provide novel methods for the production of biomass degrading enzymes, typically in genetically modified photosynthetic organisms such as algae and cyanobacteria. Also presented herein are compositions and methods for transforming photosynthetic organisms and methods of screening transformants.
Accordingly, one aspect of the present invention provides a vector comprising a nucleic acid encoding a biomass degrading enzyme and a promoter configured for expression of the nucleic acids in a non-vascular photosynthetic organism. Vectors of the present invention may contain nucleic acids encoding more than one biomass degrading enzyme and, in other instances, may contain nucleic acids encoding polypeptides which covalently link biomass degrading enzymes. Biomass degrading enzymes may include cellulolytic enzymes, hemicellulolytic enzymes and ligninolytic enzymes. More specifically, the biomass degrading enzymes may be exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase, or lignase. Nucleic acids encoding the biomass degrading enzymes may be derived from fungal or bacterial sources, for example, those encoding exo-β-glucanase in Trichoderma viride , exo-β-glucanase in Trichoderma reesei , exo-β-glucanase in Aspergillus aculeatus , endo-β-glucanase in Trichoderma reesei , endo-β-glucanase in Aspergillus niger , β-glucosidase in Trichoderma reesei , β-glucosidase in Aspergillus niger endoxylanase in Trichoderma reesei , and endoxylanase in Aspergillus niger . Other nucleic acids encoding biomass degrading enzymes may be homologous to the genes from these organisms
A vector of the present invention may also contain a selectable marker, allowing for direct screening of transformed organisms. The vectors of the present invention may be capable of stable transformation of multiple photosynthetic organisms, including, but not limited to, photosynthetic bacteria (including cyanobacteria), cyanophyta, prochlorophyta, rhodophyta, chlorophyta, heterokontophyta, tribophyta, glaucophyta, chlorarachniophytes, euglenophyta, euglenoids, haptophyta, chrysophyta, cryptophyta, cryptomonads, dinophyta, dinoflagellata, pyrmnesiophyta, bacillariophyta, xanthophyta, eustigmatophyta, raphidophyta, phaeophyta, and phytoplankton. Other vectors of the present invention are capable of stable transformation of C. reinhardtii, D. salina or H. pluvalis . Still other vectors contain nucleic acids which are biased to an organism's (e.g., C. reinhardtii ) codon preference. Specific vectors of the present invention contain sequences provided herein (SEQ ID NO. 19, SEQ ID NO. 20, SEQ ID NO. 21, SEQ ID NO. 22, SEQ ID NO. 23, SEQ ID NO. 24, SEQ ID NO. 25, SEQ ID NO. 26, or SEQ ID NO. 27).
Host cells comprising the vectors of the present invention are also provided. In some instances, the host cell is a non-vascular photosynthetic organism, for example, an organism classified as photosynthetic bacteria (including cyanobacteria), cyanophyta, prochlorophyta, rhodophyta, chlorophyta, heterokontophyta, tribophyta, glaucophyta, chlorarachniophytes, euglenophyta, euglenoids, haptophyta, chrysophyta, cryptophyta, cryptomonads, dinophyta, dinoflagellata, pyrmnesiophyta, bacillariophyta, xanthophyta, eustigmatophyta, raphidophyta, phaeophyta, and phytoplankton. A host cell of the present invention may also be a microalga species including, but not limited to, C. reinhardtii, D. salina or H. pluvalis . In other instances, the host cell may be one or more cells of a multicellular photosynthetic organism. For some embodiments, the host cell may be grown in the absence of light and/or in the presence of an organic carbon source.
The present invention also provides compositions containing one or more exogenous biomass degrading enzymes derived from one or more non-vascular photosynthetic organisms. In some instances, these compositions may also contain elements of the non-vascular photosynthetic organisms. The ratio (w/w) of enzymes to elements of the organisms may be at least 1:10, or the elements may be found only in trace amounts. Some of the compositions comprise at least one of the following enzymes: exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase, and/or lignase; where the enzyme(s) is isolated from one or more of the following organisms: C. reinhardtii, D. salina, H. pluvalis , photosynthetic bacteria (including cyanobacteria), cyanophyta, prochlorophyta, rhodophyta, chlorophyta, heterokontophyta, tribophyta, glaucophyta, chlorarachniophytes, euglenophyta, euglenoids, haptophyta, chrysophyta, cryptophyta, cryptomonads, dinophyta, dinoflagellata, pyrmnesiophyta, bacillariophyta, xanthophyta, eustigmatophyta, raphidophyta, phaeophyta, and phytoplankton. For some embodiments, the organism may be grown in the absence of light and/or in the presence of an organic carbon source.
The present invention also provides a composition containing a plurality of vectors each of which encodes a different biomass degrading enzyme and a promoter for expression of said biomass degrading enzymes in a chloroplast. Such compositions may contain multiple copies of a particular vector encoding a particular enzyme. In some instances, the vectors will contain nucleic acids encoding cellulolytic, hemicellulolytic and/or ligninolytic enzymes. More specifically, the plurality of vectors may contain vectors capable of expressing exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase and/or lignase. Some of the vectors of this embodiment are capable of insertion into a chloroplast genome and such insertion can lead to disruption of the photosynthetic capability of the transformed chloroplast. Insertion of other vectors into a chloroplast genome does not disrupt photosynthetic capability of the transformed chloroplast. Some vectors provide for expression of biomass degrading enzymes which are sequestered in a transformed chloroplast. Still other vectors may contain specific sequences provided herein (SEQ ID NO. 19, SEQ ID NO. 20, SEQ ID NO. 21, SEQ ID NO. 22, or SEQ ID NO. 23, SEQ ID NO. 24, SEQ ID NO. 25, SEQ ID NO. 26, or SEQ ID NO. 27). The present invention also provides an algal cell containing the vector compositions described above and specifically provides C. reinhardtii, D. salina or H. pluvalis cells containing the vector compositions. For some embodiments, the cell may be grown in the absence of light and/or in the presence of an organic carbon source.
Another vector of the present invention encodes a plurality of distinct biomass degrading enzymes and a promoter for expression of the biomass degrading enzymes in a non-vascular photosynthetic organism. The biomass degrading enzymes may be one or more of cellulollytic, hemicellulolytic or ligninolytic enzymes. In some vectors, the plurality of distinct biomass degrading enzymes is two or more of exo-β-glucanase, endo-β-glucanase, β-glucosidase, lignase and endoxylanase. In some embodiments, the plurality of enzymes is operatively linked. In other embodiments, the plurality of enzymes is expressed as a functional protein complex. Insertion of some vectors into a host cell genome does not disrupt photosynthetic capability of the organism. Vectors encoding a plurality of distinct enzymes, may lead to production of enzymes which are sequestered in a chloroplast of a transformed organism. The present invention also provides an algal cell or cyanobacterial cell transformed with a vector encoding a plurality of distinct enzymes. In some instances, the algal cell is C. reinhardtii, D. salina or H. pluvalis . In other instances, the cyanobacterial cell is a species of the genus Synechocystis or the genus Synechococcus or the genus Athrospira . For some embodiments, the organism may be grown in the absence of light and/or in the presence of an organic carbon source.
Yet another aspect of the present invention provides a genetically modified chloroplast producing one or more biomass degrading enzymes. Such enzymes may be cellulolytic, hemicellulolytic or ligninolytic enzymes, and more specifically, may be an exo-β-glucanase, an endo-β-glucanase, a β-glucosidase, an endoxylanase, a lignase and/or combinations thereof. The one or more enzymes are be sequestered in the chloroplast in some embodiments. The present invention also provides photosynthetic organisms containing the genetically modified chloroplasts of the present invention.
Yet another aspect provides a method for preparing a biomass-degrading enzyme. This method comprises the steps of (1) transforming a photosynthetic, non-vascular organism to produce or increase production of said biomass-degrading enzyme and (2) collecting the biomass-degrading enzyme from said transformed organism. Transformation may be conducted with a composition containing a plurality of different vectors encoding different biomass degrading enzymes. Transformation may also be conducted with a vector encoding a plurality of distinct biomass degrading enzymes. Any or all of the enzymes may be operatively linked to each other. In some instances, a chloroplast is transformed. This method of the invention may have one or more additional steps, including: (a) harvesting transformed organisms; (b) drying transformed organisms; (c) harvesting enzymes from a cell medium; (d) mechanically disrupting transformed organisms; or (e) chemically disrupting transformed organisms. The method may also comprise further purification of an enzyme through performance liquid chromatography. In some instances the transformed organism is an alga or a photosynthetic bacteria, e.g., cyanobacteria. For some embodiments, the organism may be grown in the absence of light and/or in the presence of an organic carbon source.
Still another method of the present invention allows for preparing a biofuel. One step of this method includes treating a biomass with one or more biomass degrading enzymes derived from a photosynthetic, non-vascular organism for a sufficient amount of time to degrade at least a portion of said biomass. The biofuel produced may be ethanol. The enzymes of this method may contain at least traces of said photosynthetic non-vascular organism from which they are derived. Additionally, the enzymes useful for some embodiments of this method include cellulolytic, hemicellulolytic and ligninolytic enzymes. Specific enzymes useful for some aspects of this method include exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase, and/or lignase. The organisms of this method may include photosynthetic bacteria (including cyanobacteria), cyanophyta, prochlorophyta, rhodophyta, chlorophyta, heterokontophyta, tribophyta, glaucophyta, chlorarachniophytes, euglenophyta, euglenoids, haptophyta, chrysophyta, cryptophyta, cryptomonads, dinophyta, dinoflagellata, pyrmnesiophyta, bacillariophyta, xanthophyta, eustigmatophyta, raphidophyta, phaeophyta, and phytoplankton. Other organisms used for this method are microalgae including, but not limited to C. reinhardtii, D. salina and H. pluvalis . For some embodiments, the organism may be grown in the absence of light and/or in the presence of an organic carbon source. Multiple types of biomass including agricultural waste, paper mill waste, corn stover, wheat stover, soy stover, switchgrass, duckweed, poplar trees, woodchips, sawdust, wet distiller grain, dray distiller grain, human waste, newspaper, recycled paper products, or human garbage may be treated with this method of the invention. Biomass may also be derived from a high-cellulose content organism, such as switchgrass or duckweed. The enzyme(s) used in this method may be liberated from the organism and this liberation may involve chemical or mechanical disruption of the cells of the organism. In an alternate embodiment, the enzyme(s) are secreted from the organism and then collected from a culture medium. The treatment of the biomass may involve a fermentation process, which may utilize a microorganism other than the organism which produced the enzyme(s). In some instances the non-vascular photosynthetic organism may be added to a saccharification tank. This method of the invention may also comprise the step of collecting the biofuel. Collection may be performed by distillation. In some instances, the biofuel is mixed with another fuel.
An additional method of the present invention provides for making at least one biomass degrading enzyme by transforming a chloroplast to make a biomass degrading enzyme. The biomass degrading enzyme may be a cellulolytic enzyme, a hemicellulolytic enzyme, or a ligninolytic enzyme, and specifically may be exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase, or lignase. In some instances, the biomass degrading enzyme is sequestered in the transformed chloroplast. The method may further involve disrupting, via chemical or mechanical means, the transformed chloroplast to release the biomass degrading enzyme(s). In some instances, multiple enzymes will be produced by a transformed chloroplast. The biomass degrading enzymes may be of fungal or bacterial origin, for example, exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase, lignase, or a combination thereof.
Yet another method of the present invention provides for screening a transformed non-vascular photosynthetic organism, by amplifying a first nucleic acid sequence from a chloroplast of said organism and amplifying a second nucleic acid sequence from said chloroplast of said organism and determining the plasmic state of said organism based on results from amplification of said first sequence and second sequence. In some instances the first and second amplifying step is performed simultaneously. The first nucleic acid sequence may be an endogenous chloroplast genome sequence and the second nucleic acid sequence may be at least partially from an exogenous nucleic acid. In some instances, a third nucleic acid sequence from the chloroplast may be amplified as a control. This third nucleic acid sequence may be a wild-type sequence that remains intact after integration of exogenous nucleic acid(s). Where this third nucleic acid is amplified, such amplification may be performed concurrently with the first or second amplifying step, or all three amplifications may be performed concurrently. For amplifications of this method, the specific primers provided herein—SEQ ID NO. 1, SEQ ID NO. 2, SEQ ID NO. 3, SEQ ID NO. 4, SEQ ID NO. 5, SEQ ID NO. 6, SEQ ID NO. 7, SEQ ID NO. 8, SEQ ID NO. 9, SEQ ID NO. 10, SEQ ID NO. 1, SEQ ID NO. 12, SEQ ID NO. 13, SEQ ID NO. 14, or SEQ ID NO. 15—may be utilized. Amplification of the first and/or second nucleic acid may utilize more than thirty cycles of PCR. In some instances, determining the plasmic state is performed by visual analysis of products from the amplifying steps. One or more amplifications may be performed using real-time or quantitative PCR.
The plasmic state determined by this method may be homoplasmy and the organism tested may be a microalga, specifically, one of the microalga species C. reinhardtii, D. salina or H. pluvalis . In this method, the organism may contain an exogenous nucleic acid which contains a gene of interest and a selectable marker. The gene of interest may encode a biomass degrading enzyme, for example a cellulolytic, hemicellulolytic or lignolytic enzyme. Specifically, the biomass degrading enzyme may be exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase or lignase. Additionally, the exogenous nucleic acid may be one of the nucleic acids specifically provided herein—SEQ ID NO. 19, SEQ ID NO. 20, SEQ ID NO. 21, SEQ ID NO. 22, SEQ ID NO. 23, SEQ ID NO. 24, SEQ ID NO. 25, SEQ ID NO. 26, SEQ ID NO. 27, SEQ ID NO. 28, SEQ ID NO. 29, SEQ ID NO. 30, or SEQ ID NO. 31.
The present invention also provides a non-vascular photosynthetic organism containing a homoplasmic chloroplast population, where the chloroplast population comprises an exogenous nucleic acid and where the homoplasmic state of the chloroplast population is determined by at least two different PCR reactions. In some instances, the chloroplast population is more than one chloroplast. The non-vascular photosynthetic organism may be a microalga, specifically one of the species C. reinhardtii, D. salina or H. pluvalis . The organism may be screened using at least two different PCR reactions performed simultaneously. These PCR reactions may utilize one of the specific primers disclosed herein—SEQ ID NO. 1, SEQ ID NO. 2, SEQ ID NO. 3, SEQ ID NO. 4, SEQ ID NO. 5, SEQ ID NO. 6, SEQ ID NO. 7, SEQ ID NO. 8, SEQ ID NO. 9, SEQ ID NO. 10, SEQ ID NO. 11, SEQ ID NO. 12, SEQ ID NO. 13, SEQ ID NO. 14, or SEQ ID NO. 15. The PCR reactions may utilize more than thirty cycles.
The organism may contain an exogenous nucleic acid comprising at least one gene of interest and a selectable marker. This gene may encode a biomass degrading enzyme, specifically a cellulolytic, hemicellulolytic or ligninolytic enzyme. Even more specifically, the biomass degrading enzyme may be exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase or lignase. The exogenous nucleic acid present in this organism of the present invention may be on of the nucleic acids specifically described herein—SEQ ID NO. 19, SEQ ID NO. 20, SEQ ID NO. 21, SEQ ID NO. 22, SEQ ID NO. 23, SEQ ID NO. 24, SEQ ID NO. 25, SEQ ID NO. 26, SEQ ID NO. 27, SEQ ID NO. 28, SEQ ID NO. 29, SEQ ID NO. 30, or SEQ ID NO. 31.
Another method is provided herein for producing a genetically-modified homoplasmic non-vascular photosynthetic organism. This method involves transforming at least one chloroplast of the organism with an exogenous nucleic acid, amplifying a first nucleic acid sequence and a second nucleic acid sequence, and determining the plasmic state of the organism based on results from the amplifying step. The first and second nucleic acid sequences may be within the chloroplast genome. Additionally, the first nucleic acid sequence may be an endogenous chloroplast sequence. The second nucleic acid sequence may be at least partially from the exogenous nucleic acid. This method may also involve amplifying a third nucleic acid sequence from the chloroplast as a control. In some instances the third nucleic acid is a wild-type sequence that remains intact after integration of an exogenous nucleic acid. This method may involve PCR using one of the specifically disclosed primers herein—SEQ ID NO. 1, SEQ ID NO. 2, SEQ ID NO. 3, SEQ ID NO. 4, SEQ ID NO. 5, SEQ ID NO. 6, SEQ ID NO. 7, SEQ ID NO. 8, SEQ ID NO. 9, SEQ ID NO. 10, SEQ ID NO. 11, SEQ ID NO. 12, SEQ ID NO. 13, SEQ ID NO. 14, or SEQ ID NO. 15. Amplification of the first and second nucleic acid sequences may utilize more than thirty cycles of PCR. The determination of plasmic state using this method may involve visual analysis of the products of the amplifying step(s).
The plasmic state determined by this method may be homoplasmy and the organism may be a microalga, specifically one of the species C. reinhardtii, D. salina or H. pluvalis . The exogenous nucleic acid may contain at least one gene of interest and a selectable marker. In some instances, the gene of interest encodes a biomass degrading enzyme, specifically a cellulolytic, hemicellulolytic or ligninolytic enzyme. Even more specifically the biomass degrading enzyme may be exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase or lignase. Moreover, the exogenous nucleic acid may be one specifically described herein—SEQ ID NO. 19, SEQ ID NO. 20, SEQ ID NO. 21, SEQ ID NO. 22, SEQ ID NO. 23, SEQ ID NO. 24, SEQ ID NO. 25, SEQ ID NO. 26, SEQ ID NO. 27, SEQ ID NO. 28, SEQ ID NO. 29, SEQ ID NO. 30, or SEQ ID NO. 31.
Another embodiment of the present invention is a kit for determining plasmic state of a genetically-modified non-vascular photosynthetic organism. Such a kit may contain amplification primer(s) for amplifying a first nucleic acid sequence of a chloroplast genome corresponding to an endogenous sequence and amplification primer(s) for amplifying a second nucleic acid sequence of a chloroplast genome that is an introduced or non-naturally occurring sequence. A kit may also contain a PCR buffer and/or amplification primer(s) for amplifying a control nucleic acid sequence. A kit may contain one or more of the PCR primers specifically disclosed herein—SEQ ID NO. 1, SEQ ID NO. 2, SEQ ID NO. 3, SEQ ID NO. 4, SEQ ID NO. 5, SEQ ID NO. 6, SEQ ID NO. 7, SEQ ID NO. 8, SEQ ID NO. 9, SEQ ID NO. 10, SEQ ID NO. 11, SEQ ID NO. 12, SEQ ID NO. 13, SEQ ID NO. 14, or SEQ ID NO. 15. The primer(s) for amplifying a first nucleic acid sequence in a kit of the present invention, may bind to at least a portion of a psbA 5′UTR, a psbA coding sequence, an psbC 5′ UTR, a psbD 5′ UTR, an atpA 5′ UTR, or a 3HB locus. In some instances, at least one of the primer(s) for amplifying a second nucleic acid sequence will bind to at least a portion of a sequence encoding a biomass degrading enzyme, such as a cellulolytic, hemicellulolytic or ligninolytic enzyme. Specific biomass degrading enzymes encoded by the second nucleic acid may be exo-β-glucanase, endo-β-glucanase, β-glucosidase, endoxylanase or lignase. The primers may amplify at least a portion of one or more of the sequences specifically disclosed herein—SEQ ID NO. 19, SEQ ID NO. 20, SEQ ID NO. 21, SEQ ID NO. 22, SEQ ID NO. 23, SEQ ID NO. 24, SEQ ID NO. 25, SEQ ID NO. 26, SEQ ID NO. 27, SEQ ID NO. 28, SEQ ID NO. 29, SEQ ID NO. 30, or SEQ ID NO. 31. Additionally, the kit may contain instructions for use.



SUMMARY OF THE FIGURES
The novel features of the invention are set forth with particularity in the appended claims. A better understanding of the features and advantages of the present invention will be obtained by reference to the following detailed description that sets forth illustrative embodiments, in which the principles of the invention are utilized, and the accompanying drawings of which:
FIG. 1 illustrates transformation of alga cells, selection, confirmation, and scaling of production of enzymes.
FIG. 2 illustrates two constructs for insertion of a gene into a chloroplast genome.
FIG. 3 illustrates primer pairs for PCR screening of transformants and expected band profiles for wild-type, heteroplasmic and homoplasmic strains.
FIG. 4 illustrates results from PCR screening and Western blot analysis of endo-β-glucanase transformed C. reinhardtii clones.
FIG. 5 illustrates results from PCR screening and Western blot analysis of exo-β-glucanase transformed C. reinhardtii clones.
FIG. 6 illustrates results from PCR screening and Western blot analysis of β-glucosidase transformed C. reinhardtii clones.
FIG. 7 illustrates results from PCR screening and Western blot analysis of endoxylanase transformed C. reinhardtii clones.
FIG. 8 illustrates determination of the level of endo-β-glucanase protein produced by transformed C. reinhardtii clones.
FIG. 9 is a graphic representation of an embodiment of the present invention, showing generalized constructs for insertion of multiple genes into a chloroplast genome.
FIG. 10 illustrates results from PCR screening and Western blot analysis of endo-β-glucanase transformed C. reinhardtii clones.
FIG. 11 illustrates results from PCR screening and Western blot analysis of β-glucosidase transformed C. reinhardtii clones.
FIG. 12 is a graphic representation of two exogenous DNA constructs for insertion into a chloroplast genome.
FIG. 13 is a graphic representation of two exogenous DNA constructs for insertion into a cyanobacterial genome.
FIG. 14 illustrates results from PCR screening and Western blot analysis of endo-β-glucanase transformed C. reinhardtii clones.
FIG. 15 illustrates results from PCR screening and Western blot analysis of endoxylanase transformed C. reinhardtii clones.
FIG. 16 illustrates results from PCR screening and Western blot analysis of exo-β-glucanase transformed C. reinhardtii clones.
FIG. 17 illustrates activity of bacterially-produced biomass degrading enzymes.



DETAILED DESCRIPTION OF THE INVENTION
Technical and scientific terms used herein have the meanings commonly understood by one of ordinary skill in the art to which the instant invention pertains, unless otherwise defined. Reference is made herein to various materials and methodologies known to those of skill in the art. Standard reference works setting forth the general principles of recombinant DNA technology include Sambrook et al., “Molecular Cloning: A Laboratory Manual”, 2d ed., Cold Spring Harbor Laboratory Press, Plainview, N.Y., 1989; Kaufman et al., eds., “Handbook of Molecular and Cellular Methods in Biology and Medicine”, CRC Press, Boca Raton, 1995; and McPherson, ed., “Directed Mutagenesis: A Practical Approach”, IRL Press, Oxford, 1991. Standard reference literature teaching general methodologies and principles of yeast genetics useful for selected aspects of the invention include: Sherman et al. “Laboratory Course Manual Methods in Yeast Genetics”, Cold Spring Harbor Laboratory, Cold Spring Harbor, N.Y., 1986 and Guthrie et al., “Guide to Yeast Genetics and Molecular Biology”, Academic, New York, 1991.
Where a range of values is provided, it is understood that each intervening value, to the tenth of the unit of the lower limit unless the context clearly dictates otherwise, between the upper and lower limits of that range is also specifically disclosed. Each smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in that stated range is encompassed. The upper and lower limits of these smaller ranges can independently be included or excluded in the range, and each range where either, neither or both limits are included in the smaller ranges is also encompassed, subject to any specifically excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either or both of those included limits are also included.
The present invention relates to the production of enzymes, e.g., biomass degrading enzymes, by genetically modified organisms. Another aspect of the present invention relates to compositions and methods for using biologic material to create products, such as ethanol, using biomass degrading enzymes produced by photosynthetic microorganisms, such as, but not limited to, algae. Typically, photosynthetic organisms do not possess all of the necessary enzymes to degrade biomass. The present invention takes advantage of the ability to introduce exogenous nucleic acids into algal cells, and particularly into the chloroplasts of those cells. One advantage of using molecular biology and genetic engineering to create enzyme-expressing and/or enzymatic pathway-expressing algal strains is the potential for the production of large quantities of active enzymes.
One approach to construction of a genetically manipulated strain of alga is diagramed as a flow chart in FIG. 1 . As can be seen, alga cells (e.g., Chlamydomonas reinhardti, Dunaliella salina, Hematococcus pluvalis ) are transformed with a nucleic acid which encodes a gene of interest, typically a biomass degrading enzyme. In some embodiments, a transformation may introduce nucleic acids into any plastid of the host alga cell (e.g., chloroplast). Transformed cells are typically plated on selective media following introduction of exogenous nucleic acids. This method may also comprise several steps for screening. Initially, a screen of primary transformants is typically conducted to determine which clones have proper insertion of the exogenous nucleic acids. Clones which show the proper integration may be patched and re-screened to ensure genetic stability. Such methodology ensures that the transformants contain the genes of interest. In many instances, such screening is performed by polymerase chain reaction (PCR); however, any other appropriate technique known in the art may be utilized. Many different methods of PCR are known in the art (e.g., nested PCR, real time PCR). For any given screen, one of skill in the art will recognize that PCR components may be varied to achieve optimal screening results. For example, magnesium concentration may need to be adjusted upwards when PCR is performed on disrupted alga cells as many such organisms have magnesium chelators. In such instances, magnesium concentration may need to be adjusted upward, or downward (compared to the standard concentration in commercially available PCR kits) by 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, or 2.0 mM. Thus, after adjusting, final magnesium concentration in a PCR reaction may be, for example 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5 mM or higher. Particular examples are utilized in the examples described herein; however, one of skill in the art will recognize that other PCR techniques may be substituted for the particular protocols described. Following screening for clones with proper integration of exogenous nucleic acids, typically clones are screened for the presence of the encoded protein. Protein expression screening typically is performed by Western blot analysis and/or enzyme activity assays.
Following confirmation of nucleic acid integration and/or protein expression, selected clones may be scaled up for production of biofuels through biomass degradation, first in smaller volumes of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100 or more liters. Following initial scaling up, larger scale degradation of biomass may be performed in larger quantities. One example of a partially closed bioreactor system is shown in FIG. 1 , step 6. However, growth of the transformed strains for biomass degradation and/or biofuel production can also be accomplished in man-made structures such as ponds, aqueducts, reservoirs and/or landfills. Alternately, the strains can also be grown directly in naturally occurring bodies of water, e.g., in ocean, sea, lakes, or rivers. In some cases, transformed strains are grown near ethanol production plants or other facilities. Alternately, the biomass degrading cells may be grown near regions (e.g., electrical generating plants, concrete plants, oil refineries, other industrial facilities, cities, highways, etc.) generating CO 2 . As such, the methods disclosed herein further contemplate business methods for selling carbon credits to ethanol plants or other facilities or regions generating CO 2 while making or catalyzing the production of fuels by growing one or more of the modified organisms described herein near the ethanol production plant.
The present invention contemplates making biomass degrading enzymes by transforming host cells (e.g., alga cells such as C. reinhardtii, D. salina, H. pluvalis and cyanobacterial cells) and/or organisms comprising host cells with nucleic acids encoding one or more different biomass degrading enzymes (e.g., cellulolytic enzymes, hemicellulolytic enzymes, xylanases, lignases and cellulases). In some embodiments, a single enzyme may be produced. For example, a cellulase which breaks down pretreated cellulose fragments into double glucose molecules (cellobiose) or a cellulase which splits cellobiose into glucose, may be produced.
Some host cells may be transformed with multiple genes encoding one or more enzymes. For example, a single transformed cell may contain exogenous nucleic acids encoding an entire biodegradation pathway. One example of a pathway might include genes encoding an exo-β-glucanase (acts on the cellulose end chain), an endo-β-glucanase (acts on the interior portion of a cellulose chain), β-glucosidase (avoids reaction inhibitors by/degrades cellobiose), and endoxylanase (acts on hemicellulose cross linking). Such cells transformed with entire pathways and/or enzymes extracted from them, can degrade certain components of biomass. Constructs may contain multiple copies of the same gene, and/or multiple genes encoding the same enzyme from different organisms, and/or multiple genes with mutations in one or more parts of the coding sequences.
Alternately, biomass degradation pathways can be created by transforming host cells with the individual enzymes of the pathway and then combining the cells producing the individual enzymes. This approach allows for the combination of enzymes to more particularly match the biomass of interest by altering the relative ratios of the multiple transformed strains. For example, two times as many cells expressing the first enzyme of a pathway may be added to a mix where the first step of the reaction pathway is the limiting step.
Following transformation with enzyme-encoding constructs, the host cells and/or organisms are grown. The biomass degrading enzymes may be collected from the organisms/cells. Collection may be by any means known in the art, including, but not limited to concentrating cells, mechanical or chemical disruption of cells, and purification of enzymes from cell cultures and/or cell lysates. Cells and/or organisms can be grown and then the enzyme(s) collected by any means. One method of extracting the enzyme is by harvesting the host cell or a group of host cells and then drying the host cell(s). The enzyme(s) from the dried host cell(s) are then harvested by crushing the cells to expose the enzyme. The whole product of crushed cells is then used to degrade biomass. Many methods of extracting proteins from intact cells are well known in the art, and are also contemplated herein (e.g., introducing an exogenous nucleic acid construct in which an enzyme-encoding sequence is operably linked to a sequence encoding a secretion signal—excreted enzyme is isolated from the growth medium). Following extraction of the protein from the cells/organisms and/or the surrounding medium, the protein may be purified from the crude extract such that the enzyme may comprise 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 30, 40, 50, 60, 70, 80, 90, 95, 99 percent or higher of the total protein. Purification steps include, but are not limited to, using HPLC, affinity columns, and antibody-based purification methods.
Extracting and utilizing the biomass-degrading enzyme can also be accomplished by expressing a vector containing nucleic acids that encode a biomass production-modulation molecule in the host cell. In this embodiment, the host cell produces the biomass, and also produces a biomass-degrading enzyme. The biomass-degrading enzyme can then degrade the biomass produced by the host cell. In some instances, vector used for the production of a biomass-degrading enzyme may not be continuously active. Such vectors can comprise one or more activatable promoters and one or more biomass-degrading enzymes. Such promoters activate the production of biomass-degrading enzymes, for example, after the biomass has grown to sufficient density or reached certain maturity.
A method of the invention can be performed by introducing a recombinant nucleic acid molecule into a chloroplast, wherein the recombinant nucleic acid molecule includes a first polynucleotide, which encodes at least one polypeptide (i.e., 1, 2, 3, 4, or more). In some embodiments, a polypeptide is operatively linked to a second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth and/or subsequent polypeptide. For example, several enzymes in a biodegradation pathway may be linked, either directly or indirectly, such that products produced by one enzyme in the pathway, once produced, are in close proximity to the next enzyme in the pathway.
For transformation of chloroplasts, one major benefit of the present invention is the utilization of a recombinant nucleic acid construct which contains both a selectable marker and one or more genes of interest. Typically, transformation of chloroplasts is performed by co-transformation of chloroplasts with two constructs: one containing a selectable marker and a second containing the gene(s) of interest. Screening of such transformants is laborious and time consuming for multiple reasons. First, the time required to grow some transformed organisms is lengthy. Second, transformants must be screened both for presence of the selectable marker and for the presence of the gene(s) of interest. Typically, secondary screening for the gene(s) of interest is performed by Southern blot (see, e.g. PCT/US2007/072465).
Constructs of the current invention ( FIG. 2 , FIG. 9 and FIG. 12 ), allow for a PCR-based screening method in which transformants can be screened using a combination of primers specific for the insert and wild-type sequences ( FIG. 3 , lanes: G—gene specific reaction; C—control reaction; WT—wild type reaction; M—multiplex). This methodology provides a rapid screening process and advances over older techniques. For example, selection of transformants receiving unlinked markers inherently yields a lower percentage of clones with the transgenes. Because of this, the likelihood of obtaining homoplasmic lines from a primary transformation is low. By linking the marker and the gene(s) of interest, the likelihood of obtaining transgenic clones with the transgene, especially homoplasmic clones, is improved on the first pass. Specific PCR protocols for screening transformants are detailed in the Examples below, but one of skill in the art will recognize that these protocols may be altered to provide quantitative analysis of transformants. For example, different ratios of primers for a particular reaction may be utilized to compare insert copy number to a control reaction. Such variation may be performed where the multiplex reactions ( FIG. 3 , row M) are run concurrently or separately.
Determination of insert copy number may be important in some embodiments where an optimal level of expression of the exogenous gene(s) of interest is, in part, determined by gene copy number. For example, transformation of an alga host cell (e.g., C. reinhardtii, D. salina, H. pluvalis ) which results in incorporation of the exogenous nucleic acid in less than half of the copies of the chloroplast genomes in a cell may yield little or no detectable expression of the gene(s) of interest. Alternately, incorporation of exogenous nucleic acid in all the copies of the chloroplast genomes in a cell may yield little or no detectable expression of the gene(s) of interest where there are few initial copies of the genome (e.g., quantitative PCR analysis will allow for exclusion of homoplasmic clones which have low insert copy number, and thus may not have sufficiently high production of the gene and/or polypeptide of interest). In other embodiments, there may be an optimum level of incorporation of exogenous nucleic acid. In some instances, exogenous DNA may encode a protein which, whether through transcriptional, translational, or other control mechanisms, is optimally produced when it is present in a particular range of copy number. Thus, determining the copy number of such exogenous DNA, for example by quantitative PCR, may allow selection and/or production of transformed organisms which produce protein(s) of interest at an efficient level.
Additionally, recombinant nucleic acid molecules of the present invention may be operatively linked to a second and/or subsequent nucleotide sequence. For example, the nucleotide sequences encoding enzymes of a biodegradation pathway may be operatively linked such that expression of these sequences may be controlled with a single inducing stimulus or controlled by a single transcriptional activator. Such systems are similar to bacterial operons (e.g., the Escherischia coli Lac operon). However, these groupings of operatively linked nucleotide sequences in the present invention are synthetic and designed to function in plant plastids, preferably are incorporated into the chloroplast genome.
As used herein, the term “operatively linked” means that two or more molecules are positioned with respect to each other such that they act as a single unit and affect a function attributable to one or both molecules or a combination thereof. For example, a polynucleotide encoding a polypeptide can be operatively linked to a transcriptional or translational regulatory element, in which case the element confers its regulatory effect on the polynucleotide similarly to the way in which the regulatory element would affect a polynucleotide sequence with which it normally is associated with in a cell. A first polynucleotide coding sequence also can be operatively linked to a second (or more) coding sequence such that a chimeric polypeptide can be expressed from the operatively linked coding sequences. The chimeric polypeptide produced from such a construct can be a fusion protein, in which the two (or more) encoded peptides are translated into a single polypeptide, i.e., are covalently bound through a peptide bond, either directly or with a short spacer region.
In chloroplasts, regulation of gene expression generally occurs after transcription, and often during translation initiation. This regulation is dependent upon the chloroplast translational apparatus, as well as nuclear-encoded regulatory factors (see Barkan and Goldschmidt-Clermont, Biochemie 82:559-572, 2000; Zerges, Biochemie 82:583-601, 2000). The chloroplast translational apparatus generally resembles that in bacteria; chloroplasts contain 70S ribosomes; have mRNAs that lack 5′ caps and generally do not contain 3′ poly-adenylated tails (Harris et al., Microbiol. Rev. 58:700-754, 1994); and translation is inhibited in chloroplasts and in bacteria by selective agents such as chloramphenicol.
Some methods of the present invention take advantage of proper positioning of a ribosome binding sequence (RBS) with respect to a coding sequence. It has previously been noted that such placement of an RBS results in robust translation in plant chloroplasts (see U.S. Application 2004/0014174, incorporated herein by reference), and that polypeptides that an advantage of expressing polypeptides in chloroplasts is that the polypeptides do not proceed through cellular compartments typically traversed by polypeptides expressed from a nuclear gene and, therefore, are not subject to certain post-translational modifications such as glycosylation. As such, the polypeptides and protein complexes produced by some methods of the invention can be expected to be produced without such post-translational modification.
The following discussion is provided by way of background only and applicant does not intend the disclosed invention to be limited, either in scope, or by theory, to the disclosure of mechanisms of chloroplast gene regulation. In chloroplasts, ribosome binding and proper translation start site selection are thought to be mediated, at least in part, by cis-acting RNA elements. One example of a potential regulator has been identified within the 5′UTR's of chloroplast mRNAs (Alexander et al., Nucl. Acids Res. 26:2265-2272, 1998; Hirose and Sugiura, EMBO J. 15:1687-1695, 1996; Mayfield et al., J. Cell Biol. 127:1537-1545, 1994; Sakamoto et al., Plant J. 6:503-512, 1994, each of which is incorporated herein by reference). These elements may interact with nuclear-encoded factors.
Many chloroplast mRNAs contain elements resembling prokaryotic RBS elements (Bonham-Smith and Bourque, Nucl. Acids Res. 17:2057-2080, 1989; Ruf and Kossel, FEBS Lett. 240:41-44, 1988, each of which is incorporated herein by reference). However, the functional utility of these RBS sequences in chloroplast translation has been unclear as several studies have shown differing effects of these elements on translation (Betts and Spremulli, J. Biol. Chem. 269:26456-26465, 1994; Hirose et al., FEBS Lett. 430:257-260, 1998; Fargo et al., Mol. Gen. Genet. 257:271-282, 1998; Koo and Spremulli, J. Biol. Chem. 269:7494-7500, 1994; Rochaix, Plant Mol. Biol. 32:327-341, 1996). Interpretation of these results has been complicated by the lack of a consensus for chloroplast RBS elements, and because the mutations generated to study these putative RBS sequences may have altered the context of other important sequences within the 5′UTR.
Some aspects (e.g., vectors) of the present invention may include an RBS. Such RBSs can be chemically synthesized, or can be isolated from a naturally occurring nucleic acid molecule (e.g., isolation from a chloroplast gene). In addition, to an RBS, embodiments with a 5′UTR can include transcriptional regulatory elements such as a promoter. As with RBSs utilized for the present invention, a 5′UTR may be chemically synthesized, or can be isolated from a naturally occurring nucleic acid molecule. Non-limiting examples of 5′UTRs which may be used for the present invention include, but art not limited to, an atpA 5′UTR; a psbC 5′UTR, a psbD 5′UTR, a psbA 5′UTR, a rbcL 5′UTR and/or a 16S rRNA 5′UTR. A ribonucleotide sequence may further include an initiation codon, (e.g., an AUG codon), operatively linked to an RBS. Initiation codons may be endogenous (e.g., naturally occurring in a cloned gene) or can be synthetic (e.g., inserted in a linker polypeptide or PCR primer).
An isolated ribonucleotide sequence may be obtained by any method known in the art, including, but not limited to being chemically synthesized, generated using an enzymatic method, (e.g., generated from a DNA or RNA template using a DNA dependent RNA polymerase or an RNA dependent RNA polymerase). A DNA template encoding the ribonucleotide of the invention can be chemically synthesized, can be isolated from a naturally occurring DNA molecule, or can be derived from a naturally occurring DNA sequence that is modified to have the required characteristics.
The term “polynucleotide” or “nucleotide sequence” or “nucleic acid molecule” is used broadly herein to mean a sequence of two or more deoxyribonucleotides or ribonucleotides that are linked together by a phosphodiester bond. As such, the terms include RNA and DNA, which can be a gene or a portion thereof, a cDNA, a synthetic polydeoxyribonucleic acid sequence, or the like, and can be single stranded or double stranded, as well as a DNA/RNA hybrid. Furthermore, the terms as used herein include naturally occurring nucleic acid molecules, which can be isolated from a cell, as well as synthetic polynucleotides, which can be prepared, for example, by methods of chemical synthesis or by enzymatic methods such as by the polymerase chain reaction (PCR). It should be recognized that the different terms are used only for convenience of discussion so as to distinguish, for example, different components of a composition, except that the term “synthetic polynucleotide” as used herein refers to a polynucleotide that has been modified to reflect chloroplast codon usage.
In general, the nucleotides comprising a polynucleotide are naturally occurring deoxyribonucleotides, such as adenine, cytosine, guanine or thymine linked to 2′-deoxyribose, or ribonucleotides such as adenine, cytosine, guanine or uracil linked to ribose. Depending on the use, however, a polynucleotide also can contain nucleotide analogs, including non-naturally occurring synthetic nucleotides or modified naturally occurring nucleotides. Nucleotide analogs are well known in the art and commercially available, as are polynucleotides containing such nucleotide analogs (Lin et al., Nucl. Acids Res. 22:5220-5234, 1994; Jellinek et al., Biochemistry 34:11363-11372, 1995; Pagratis et al., Nature Biotechnol. 15:68-73, 1997). Generally, a phosphodiester bond links the nucleotides of a polynucleotide of the present invention, however other bonds, including a thiodiester bond, a phosphorothioate bond, a peptide-like bond and any other bond known in the art may be utilized to produce synthetic polynucleotides (Tam et al., Nucl. Acids Res. 22:977-986, 1994; Ecker and Crooke, BioTechnology 13:351360, 1995).
A polynucleotide comprising naturally occurring nucleotides and phosphodiester bonds can be chemically synthesized or can be produced using recombinant DNA methods, using an appropriate polynucleotide as a template. In comparison, a polynucleotide comprising nucleotide analogs or covalent bonds other than phosphodiester bonds generally are chemically synthesized, although an enzyme such as T7 polymerase can incorporate certain types of nucleotide analogs into a polynucleotide and, therefore, can be used to produce such a polynucleotide recombinantly from an appropriate template (Jellinek et al., supra, 1995). Polynucleotides useful for practicing a method of the present invention may be isolated from any organism. Typically, the biodegradative enzymes utilized in practicing the present invention are encoded by nucleotide sequences from bacteria or fungi. Non-limiting examples of such enzymes and their sources are shown in Table I. Such polynucleotides may be isolated and/or synthesized by any means known in the art, including, but not limited to cloning, sub-cloning, and PCR.
One or more codons of an encoding polynucleotide can be biased to reflect chloroplast codon usage. Most amino acids are encoded by two or more different (degenerate) codons, and it is well recognized that various organisms utilize certain codons in preference to others. Such preferential codon usage, which also is utilized in chloroplasts, is referred to herein as “chloroplast codon usage”. The codon bias of Chlamydomonas reinihardtii has been reported. See U.S. Application 2004/0014174.
The term “biased,” when used in reference to a codon, means that the sequence of a codon in a polynucleotide has been changed such that the codon is one that is used preferentially in the target which the bias is for, e.g., alga cells, chloroplasts, or the like. A polynucleotide that is biased for chloroplast codon usage can be synthesized de novo, or can be genetically modified using routine recombinant DNA techniques, for example, by a site directed mutagenesis method, to change one or more codons such that they are biased for chloroplast codon usage. Chloroplast codon bias can be variously skewed in different plants, including, for example, in alga chloroplasts as compared to tobacco. Generally, the chloroplast codon bias selected reflects chloroplast codon usage of the plant which is being transformed with the nucleic acids of the present invention. For example, where C. reinhardtii is the host, the chloroplast codon usage is biased to reflect alga chloroplast codon usage (about 74.6% AT bias in the third codon position).
One method of the invention can be performed using a polynucleotide that encodes a first polypeptide and at least a second polypeptide. As such, the polynucleotide can encode, for example, a first polypeptide and a second polypeptide; a first polypeptide, a second polypeptide, and a third polypeptide; etc. Furthermore, any or all of the encoded polypeptides can be the same or different. The polypeptides expressed in chloroplasts of the microalga C. reinhardtii may be assembled to form functional polypeptides and protein complexes. As such, a method of the invention provides a means to produce functional protein complexes, including, for example, dimers, trimers, and tetramers, wherein the subunits of the complexes can be the same or different (e.g., homodimers or heterodimers, respectively).
The term “recombinant nucleic acid molecule” is used herein to refer to a polynucleotide that is manipulated by human intervention. A recombinant nucleic acid molecule can contain two or more nucleotide sequences that are linked in a manner such that the product is not found in a cell in nature. In particular, the two or more nucleotide sequences can be operatively linked and, for example, can encode a fusion polypeptide, or can comprise an encoding nucleotide sequence and a regulatory element. A recombinant nucleic acid molecule also can be based on, but manipulated so as to be different, from a naturally occurring polynucleotide, (e.g. biased for chloroplast codon usage, insertion of a restriction enzyme site, insertion of a promoter, insertion of an origin of replication). A recombinant nucleic acid molecule may further contain a peptide tag (e.g., His-6 tag), which can facilitate identification of expression of the polypeptide in a cell. Additional tags include, for example: a FLAG epitope, a c-myc epitope; biotin; and glutathione S-transferase. Such tags can be detected by any method known in the art (e.g., anti-tag antibodies, streptavidin). Such tags may also be used to isolate the operatively linked polypeptide(s), for example by affinity chromatography.
Composition:
Nucleic Acids
The compositions herein comprise nucleic acids which encode one or more different biomass degrading enzymes and/or one or more different biomass-production modulating agent and vectors of such nucleic acids. The nucleic acids can be heterologous to a photosynthetic host cell to which they are inserted. The vector can include one or a plurality of copies of the nucleic acids which encode the biomass degrading enzymes and/or one or a plurality of copies of the nucleic acids which encode the biomass-production modulating agents. When using a plurality of copies, at least 2, 3, 4, 5, 6 7, 8, 9, or 10 copies of the nucleic acids (e.g., encoding a single biomass degrading enzyme) can be inserted into a single vector. This allows for an increased level of their production in the host cell.
A recombinant nucleic acid molecule useful in a method of the invention can be contained in a vector. Furthermore, where the method is performed using a second (or more) recombinant nucleic acid molecules, the second recombinant nucleic acid molecule also can be contained in a vector, which can, but need not, be the same vector as that containing the first recombinant nucleic acid molecule. The vector can be any vector useful for introducing a polynucleotide into a chloroplast and, preferably, includes a nucleotide sequence of chloroplast genomic DNA that is sufficient to undergo homologous recombination with chloroplast genomic DNA, for example, a nucleotide sequence comprising about 400 to 1500 or more substantially contiguous nucleotides of chloroplast genomic DNA. Chloroplast vectors and methods for selecting regions of a chloroplast genome for use as a vector are well known (see, for example, Bock, J. Mol. Biol. 312:425-438, 2001; see, also, Staub and Maliga, Plant Cell 4:39-45, 1992; Kavanagh et al., Genetics 152:1111-1122, 1999, each of which is incorporated herein by reference).
In some instances, such vectors include promoters. Promoters useful for the present invention may come from any source (e.g., viral, bacterial, fungal, protist, animal). The promoters contemplated herein can be specific to photosynthetic organisms, non-vascular photosynthetic organisms, and vascular photosynthetic organisms (e.g., algae, flowering plants). As used herein, the term “non-vascular photosynthetic organism,” refers to any macroscopic or microscopic organism, including, but not limited to, algae, cyanobacteria and photosynthetic bacteria, which does not have a vascular system such as that found in higher plants. In some instances, the nucleic acids above are inserted into a vector that comprises a promoter of a photosynthetic organism, e.g., algae. The promoter can be a promoter for expression in a chloroplast and/or other plastid. In some instances, the nucleic acids are chloroplast based. Examples of promoters contemplated for insertion of any of the nucleic acids herein into the chloroplast include those disclosed in US Application No. 2004/0014174. The promoter can be a constitutive promoter or an inducible promoter. A promoter typically includes necessary nucleic acid sequences near the start site of transcription, (e.g., a TATA element).
A “constitutive” promoter is a promoter that is active under most environmental and developmental conditions. An “inducible” promoter is a promoter that is active under environmental or developmental regulation. Examples of inducible promoters/regulatory elements include, for example, a nitrate-inducible promoter (Back et al, Plant Mol. Biol. 17:9 (1991)), or a light-inducible promoter, (Feinbaum et al, MoI Gen. Genet. 226:449 (1991); Lam and Chua, Science 248:471 (1990)), or a heat responsive promoter (Muller et al., Gene 111: 165-73 (1992)).
The entire chloroplast genome of C. reinhardtii is available to the public on the world wide web, at the URL “biology.duke.edu/chlamy_genome/-chloro.html” (see “view complete genome as text file” link and “maps of the chloroplast genome” link), each of which is incorporated herein by reference (J. Maul, J. W. Lilly, and D. B. Stern, unpublished results; revised Jan. 28, 2002; to be published as GenBank Acc. No. AF396929). Generally, the nucleotide sequence of the chloroplast genomic DNA is selected such that it is not a portion of a gene, including a regulatory sequence or coding sequence, particularly a gene that, if disrupted due to the homologous recombination event, would produce a deleterious effect with respect to the chloroplast, for example, for replication of the chloroplast genome, or to a plant cell containing the chloroplast. In this respect, the website containing the C. reinhardtii chloroplast genome sequence also provides maps showing coding and non-coding regions of the chloroplast genome, thus facilitating selection of a sequence useful for constructing a vector of the invention. For example, the chloroplast vector, p322, which was used in experiments disclosed herein, is a clone extending from the Eco (Eco RI) site at about position 143.1 kb to the Xho (Xho I) site at about position 148.5 kb (see, world wide web, at the URL “biology.duke.edu/chlamy_genome/chloro.html”, and clicking on “maps of the chloroplast genome” link, and “140-150 kb” link; also accessible directly on world wide web at URL “biology.duke.edu/chlam-y/chloro/chlorol40.html”; see, also, Example 1).
A vector utilized in the practice of the invention also can contain one or more additional nucleotide sequences that confer desirable characteristics on the vector, including, for example, sequences such as cloning sites that facilitate manipulation of the vector, regulatory elements that direct replication of the vector or transcription of nucleotide sequences contain therein, sequences that encode a selectable marker, and the like. As such, the vector can contain, for example, one or more cloning sites such as a multiple cloning site, which can, but need not, be positioned such that a heterologous polynucleotide can be inserted into the vector and operatively linked to a desired element. The vector also can contain a prokaryote origin of replication (ori), for example, an E. coli ori or a cosmid ori, thus allowing passage of the vector in a prokaryote host cell, as well as in a plant chloroplast, as desired.
A regulatory element, as the term is used herein, broadly refers to a nucleotide sequence that regulates the transcription or translation of a polynucleotide or the localization of a polypeptide to which it is operatively linked. Examples include, but are not limited to, an RBS, a promoter, enhancer, transcription terminator, an initiation (start) codon, a splicing signal for intron excision and maintenance of a correct reading frame, a STOP codon, an amber or ochre codon, an IRES. Additionally, a cell compartmentalization signal (i.e., a sequence that targets a polypeptide to the cytosol, nucleus, chloroplast membrane or cell membrane). Such signals are well known in the art and have been widely reported (see, e.g., U.S. Pat. No. 5,776,689).
A vector or other recombinant nucleic acid molecule may include a nucleotide sequence encoding a reporter polypeptide or other selectable marker. The term “reporter” or “selectable marker” refers to a polynucleotide (or encoded polypeptide) that confers a detectable phenotype. A reporter generally encodes a detectable polypeptide, for example, a green fluorescent protein or an enzyme such as luciferase, which, when contacted with an appropriate agent (a particular wavelength of light or luciferin, respectively) generates a signal that can be detected by eye or using appropriate instrumentation (Giacomin, Plant Sci. 116:59-72, 1996; Scikantha, J. Bacteriol. 178:121, 1996; Gerdes, FEBS Lett. 389:44-47, 1996; see, also, Jefferson, EMBO J. 6:3901-3907, 1997, fl-glucuronidase). A selectable marker generally is a molecule that, when present or expressed in a cell, provides a selective advantage (or disadvantage) to the cell containing the marker, for example, the ability to grow in the presence of an agent that otherwise would kill the cell.
A selectable marker can provide a means to obtain prokaryotic cells or plant cells or both that express the marker and, therefore, can be useful as a component of a vector of the invention (see, for example, Bock, supra, 2001). Examples of selectable markers include, but are not limited to, those that confer antimetabolite resistance, for example, dihydrofolate reductase, which confers resistance to methotrexate (Reiss, Plant Physiol . ( Life Sci. Adv .) 13:143-149, 1994); neomycin phosphotransferase, which confers resistance to the aminoglycosides neomycin, kanamycin and paromycin (Herrera-Estrella, EMBO J. 2:987-995, 1983), hygro, which confers resistance to hygromycin (Marsh, Gene 32:481-485, 1984), trpB, which allows cells to utilize indole in place of tryptophan; hisD, which allows cells to utilize histinol in place of histidine (Hartman, Proc. Natl. Acad. Sci ., USA 85:8047, 1988); mannose-6-phosphate isomerase which allows cells to utilize mannose (WO 94/20627); ornithine decarboxylase, which confers resistance to the ornithine decarboxylase inhibitor, 2-(difluoromethyl)-DL-ornithine (DFMO; McConlogue, 1987, In: Current Communications in Molecular Biology, Cold Spring Harbor Laboratory ed.); and deaminase from Aspergillus terreus , which confers resistance to Blasticidin S (Tamura, Biosci. Biotechnol. Biochem. 59:2336-2338, 1995). Additional selectable markers include those that confer herbicide resistance, for example, phosphinothricin acetyltransferase gene, which confers resistance to phosphinothricin (White et al., Nucl. Acids Res. 18:1062, 1990; Spencer et al., Theor. Appl. Genet. 79:625-631, 1990), a mutant EPSPV-synthase, which confers glyphosate resistance (Hinchee et al., BioTechnology 91:915-922, 1998), a mutant acetolactate synthase, which confers imidazolone or sulfonylurea resistance (Lee et al., EMBO J. 7:1241-1248, 1988), a mutant psbA, which confers resistance to atrazine (Smeda et al., Plant Physiol. 103:911-917, 1993), or a mutant protoporphyrinogen oxidase (see U.S. Pat. No. 5,767,373), or other markers conferring resistance to an herbicide such as glufosinate. Selectable markers include polynucleotides that confer dihydrofolate reductase (DHFR) or neomycin resistance for eukaryotic cells and tetracycline; ampicillin resistance for prokaryotes such as E. coli ; and bleomycin, gentamycin, glyphosate, hygromycin, kanamycin, methotrexate, phleomycin, phosphinotricin, spectinomycin, streptomycin, sulfonamide and sulfonylurea resistance in plants (see, for example, Maliga et al., Methods in Plant Molecular Biology, Cold Spring Harbor Laboratory Press, 1995, page 39).
Reporter genes have been successfully used in chloroplasts of higher plants, and high levels of recombinant protein expression have been reported. In addition, reporter genes have been used in the chloroplast of C. reinhardtii , but, in most cases very low amounts of protein were produced. Reporter genes greatly enhance the ability to monitor gene expression in a number of biological organisms. In chloroplasts of higher plants, β-glucuronidase (uidA, Staub and Maliga, EMBO J. 12:601-606, 1993), neomycin phosphotransferase (nptII, Carrer et al., Mol. Gen. Genet. 241:49-56, 1993), adenosyl-3-adenyltransf-erase (aadA, Svab and Maliga, Proc. Natl. Acad. Sci., USA 90:913-917, 1993), and the Aequorea victoria GFP (Sidorov et al., Plant J. 19:209-216, 1999) have been used as reporter genes (Heifetz, Biochemie 82:655-666, 2000). Each of these genes has attributes that make them useful reporters of chloroplast gene expression, such as ease of analysis, sensitivity, or the ability to examine expression in situ. Based upon these studies, other heterologous proteins have been expressed in the chloroplasts of higher plants such as Bacillus thuringiensis Cry toxins, conferring resistance to insect herbivores (Kota et al., Proc. Natl. Acad. Sci., USA 96:1840-1845, 1999), or human somatotropin (Staub et al., Nat. Biotechnol. 18:333-338, 2000), a potential biopharmaceutical. Several reporter genes have been expressed in the chloroplast of the eukaryotic green alga, C. reinhardtii , including aadA (Goldschmidt-Clermont, Nucl. Acids Res. 19:4083-4089 1991; Zerges and Rochaix, Mol. Cell. Biol. 14:5268-5277, 1994), uidA (Sakamoto et al., Proc. Natl. Acad. Sci ., USA 90:477-501, 19933, Ishikura et al., J. Biosci. Bioeng. 87:307-314 1999), Renilla luciferase (Minko et al., Mol. Gen. Genet. 262:421-425, 1999) and the amino glycoside phosphotransferase from Acinetobacter baumanii , aphA6 (Bateman and Purton, Mol. Gen. Genet. 263:404-410, 2000).
In some instances, the vectors of the present invention will contain elements such as an E. coli or S. cerevisiae origin of replication. Such features, combined with appropriate selectable markers, allows for the vector to be “shuttled” between the target host cell and the bacterial and/or yeast cell. The ability to passage a shuttle vector of the invention in a secondary host may allow for more convenient manipulation of the features of the vector. For example, a reaction mixture containing the vector and putative inserted polynucleotides of interest can be transformed into prokaryote host cells such as E. coli , amplified and collected using routine methods, and examined to identify vectors containing an insert or construct of interest. If desired, the vector can be further manipulated, for example, by performing site directed mutagenesis of the inserted polynucleotide, then again amplifying and selecting vectors having a mutated polynucleotide of interest. A shuttle vector then can be introduced into plant cell chloroplasts, wherein a polypeptide of interest can be expressed and, if desired, isolated according to a method of the invention.
A polynucleotide or recombinant nucleic acid molecule of the invention, can be introduced into plant chloroplasts using any method known in the art. A polynucleotide can be introduced into a cell by a variety of methods, which are well known in the art and selected, in part, based on the particular host cell. For example, the polynucleotide can be introduced into a plant cell using a direct gene transfer method such as electroporation or microprojectile mediated (biolistic) transformation using a particle gun, or the “glass bead method,” or by pollen-mediated transformation, liposome-mediated transformation, transformation using wounded or enzyme-degraded immature embryos, or wounded or enzyme-degraded embryogenic callus (Potrykus, Ann. Rev. Plant. Physiol. Plant Mol. Biol. 42:205-225, 1991).
The term “exogenous” is used herein in a comparative sense to indicate that a nucleotide sequence (or polypeptide) being referred to is from a source other than a reference source, or is linked to a second nucleotide sequence (or polypeptide) with which it is not normally associated, or is modified such that it is in a form that is not normally associated with a reference material. For example, a polynucleotide encoding an biomass degrading enzyme is heterologous with respect to a nucleotide sequence of a plant chloroplast, as are the components of a recombinant nucleic acid molecule comprising, for example, a first nucleotide sequence operatively linked to a second nucleotide sequence, as is a mutated polynucleotide introduced into a chloroplast where the mutant polynucleotide is not normally found in the chloroplast.
Plastid transformation is a routine and well known method for introducing a polynucleotide into a plant cell chloroplast (see U.S. Pat. Nos. 5,451,513, 5,545,817, and 5,545,818; WO 95/16783; McBride et al., Proc. Natl. Acad. Sci ., USA 91:7301-7305, 1994). In some embodiments, chloroplast transformation involves introducing regions of chloroplast DNA flanking a desired nucleotide sequence, allowing for homologous recombination of the exogenous DNA into the target chloroplast genome. In some instances one to 1.5 kb flanking nucleotide sequences of chloroplast genomic DNA may be used. Using this method, point mutations in the chloroplast 16S rRNA and rps12 genes, which confer resistance to spectinomycin and streptomycin, can be utilized as selectable markers for transformation (Svab et al., Proc. Natl. Acad. Sci ., USA 87:8526-8530, 1990), and can result in stable homoplasmic transformants, at a frequency of approximately one per 100 bombardments of target leaves.
Microprojectile mediated transformation also can be used to introduce a polynucleotide into a plant cell chloroplast (Klein et al., Nature 327:70-73, 1987). This method utilizes microprojectiles such as gold or tungsten, which are coated with the desired polynucleotide by precipitation with calcium chloride, spermidine or polyethylene glycol. The microprojectile particles are accelerated at high speed into a plant tissue using a device such as the BIOLISTIC PD-1000 particle gun (BioRad; Hercules Calif.). Methods for the transformation using biolistic methods are well known in the art (see, e.g.; Christou, Trends in Plant Science 1:423-431, 1996). Microprojectile mediated transformation has been used, for example, to generate a variety of transgenic plant species, including cotton, tobacco, corn, hybrid poplar and papaya. Important cereal crops such as wheat, oat, barley, sorghum and rice also have been transformed using microprojectile mediated delivery (Duan et al., Nature Biotech. 14:494-498, 1996; Shimamoto, Curr. Opin. Biotech. 5:158-162, 1994). The transformation of most dicotyledonous plants is possible with the methods described above. Transformation of monocotyledonous plants also can be transformed using, for example, biolistic methods as described above, protoplast transformation, electroporation of partially permeabilized cells, introduction of DNA using glass fibers, the glass bead agitation method, and the like.
Transformation frequency may be increased by replacement of recessive rRNA or r-protein antibiotic resistance genes with a dominant selectable marker, including, but not limited to the bacterial aadA gene (Svab and Maliga, Proc. Natl. Acad. Sci ., USA 90:913-917, 1993). Approximately 15 to 20 cell division cycles following transformation are generally required to reach a homoplastidic state. It is apparent to one of skill in the art that a chloroplast may contain multiple copies of its genome, and therefore, the term “homoplasmic” or “homoplasmy” refers to the state where all copies of a particular locus of interest are substantially identical. Plastid expression, in which genes are inserted by homologous recombination into all of the several thousand copies of the circular plastid genome present in each plant cell, takes advantage of the enormous copy number advantage over nuclear-expressed genes to permit expression levels that can readily exceed 10% of the total soluble plant protein.
The methods of the present invention are exemplified using the microalga, C. reinhardtii . The use of microalgae to express a polypeptide or protein complex according to a method of the invention provides the advantage that large populations of the microalgae can be grown, including commercially (Cyanotech Corp.; Kailua-Kona Hi.), thus allowing for production and, if desired, isolation of large amounts of a desired product. However, the ability to express, for example, functional mammalian polypeptides, including protein complexes, in the chloroplasts of any plant allows for production of crops of such plants and, therefore, the ability to conveniently produce large amounts of the polypeptides. Accordingly, the methods of the invention can be practiced using any plant having chloroplasts, including, for example, macroalgae, for example, marine algae and seaweeds, as well as plants that grow in soil, for example, corn ( Zea mays ), Brassica sp. (e.g., B. napus, B. rapa, B. juncea ), particularly those Brassica species useful as sources of seed oil, alfalfa ( Medicago sativa ), rice ( Oryza sativa ), rye ( Secale cereale ), sorghum ( Sorghum bicolor, Sorghum vulgare ), millet (e.g., pearl millet ( Pennisetum glaucum ), proso millet ( Panicum miliaceum ), foxtail millet ( Setaria italica ), finger millet ( Eleusine coracana )), sunflower ( Helianthus annuus ), safflower ( Carthamus tinctorius ), wheat ( Triticum aestivum ), soybean ( Glycine max ), tobacco ( Nicotiana tabacum ), potato ( Solanum tuberosum ), peanuts ( Arachis hypogaea ), cotton ( Gossypium barbadense, Gossypium hirsutum ), sweet potato ( Ipomoea batatus ), cassaya ( Manihot esculenta ), coffee ( Cofea spp.), coconut ( Cocos nucifera ), pineapple ( Ananas comosus ), citrus trees ( Citrus spp.), cocoa ( Theobroma cacao ), tea ( Camellia sinensis ), banana ( Musa spp.), avocado ( Persea ultilane ), fig ( Ficus casica ), guava ( Psidium guajava ), mango ( Mangifera indica ), olive ( Olea europaea ), papaya ( Carica papaya ), cashew ( Anacardium occidentale ), macadamia ( Macadamia integrifolia ), almond ( Prunus amygdalus ), sugar beets ( Beta vulgaris ), sugar cane ( Saccharum spp.), oats, duckweed ( Lemna ), barley, tomatoes ( Lycopersicon esculentum ), lettuce (e.g., Lactuca sativa ), green beans ( Phaseolus vulgaris ), lima beans ( Phaseolus limensis ), peas ( Lathyrus spp.), and members of the genus Cucumis such as cucumber ( C. sativus ), cantaloupe ( C. cantalupensis ), and musk melon ( C. melo ). Ornamentals such as azalea ( Rhododendron spp.), hydrangea ( Macrophylla hydrangea ), hibiscus ( Hibiscus rosasanensis ), roses ( Rosa spp.), tulips ( Tulipa spp.), daffodils ( Narcissus spp.), petunias ( Petunia hybrida ), carnation ( Dianthus caryophyllus ), poinsettia ( Euphorbia pulcherrima ), and chrysanthemum are also included. Additional ornamentals useful for practicing a method of the invention include impatiens, Begonia, Pelargonium, Viola, Cyclamen, Verbena, Vinca, Tagetes, Primula, Saint Paulia, Agertum, Amaranthus, Antihirrhinum, Aquilegia, Cineraria, Clover, Cosmo, Cowpea, Dahlia, Datura, Delphinium, Gerbera, Gladiolus, Gloxinia, Hippeastrum, Mesembryanthemum, Salpiglossos, and Zinnia. Conifers that may be employed in practicing the present invention include, for example, pines such as loblolly pine ( Pinus taeda ), slash pine ( Pinus elliotii ), ponderosa pine ( Pinus ponderosa ), lodgepole pine ( Pinus contorta ), and Monterey pine ( Pinus radiata ), Douglas-fir ( Pseudotsuga menziesii ); Western hemlock ( Tsuga ultilane ); Sitka spruce ( Picea glauca ); redwood ( Sequoia seinpervirens ); true firs such as silver fir ( Abies amabilis ) and balsam fir ( Abies balsamea ); and cedars such as Western red cedar ( Thuja plicata ) and Alaska yellow-cedar ( Chamaecyparis nootkatensis ).
Leguminous plants useful for practicing a method of the invention include beans and peas. Beans include guar, locust bean, fenugreek, soybean, garden beans, cowpea, mung bean, lima bean, fava bean, lentils, chickpea, etc. Legumes include, but are not limited to, Arachis , e.g., peanuts, Vicia , e.g., crown vetch, hairy vetch, adzuki bean, mung bean, and chickpea, Lupinus , e.g., lupine, trifolium, Phaseolus , e.g., common bean and lima bean, Pisum , e.g., field bean, Melilotus , e.g., clover, Medicago , e.g., alfalfa, Lotus , e.g., trefoil, lens, e.g., lentil, and false indigo. Preferred forage and turf grass for use in the methods of the invention include alfalfa, orchard grass, tall fescue, perennial ryegrass, creeping bent grass, and redtop. Other plants useful in the invention include Acacia , aneth, artichoke, arugula, blackberry, canola, cilantro, clementines, escarole, eucalyptus, fennel, grapefruit, honey dew, jicama, kiwifruit, lemon, lime, mushroom, nut, okra, orange, parsley, persimmon, plantain, pomegranate, poplar, radiata pine, radicchio, Southern pine, sweetgum, tangerine, triticale, vine, yams, apple, pear, quince, cherry, apricot, melon, hemp, buckwheat, grape, raspberry, chenopodium , blueberry, nectarine, peach, plum, strawberry, watermelon, eggplant, pepper, cauliflower, Brassica , e.g., broccoli, cabbage, ultilan sprouts, onion, carrot, leek, beet, broad bean, celery, radish, pumpkin, endive, gourd, garlic, snapbean, spinach, squash, turnip, ultilane, chicory, groundnut and zucchini. Thus, the compositions contemplated herein include host organisms comprising any of the above nucleic acids. The host organism can be any chloroplast-containing organism.
The term “plant” is used broadly herein to refer to a eukaryotic organism containing plastids, particularly chloroplasts, and includes any such organism at any stage of development, or to part of a plant, including a plant cutting, a plant cell, a plant cell culture, a plant organ, a plant seed, and a plantlet. A plant cell is the structural and physiological unit of the plant, comprising a protoplast and a cell wall. A plant cell can be in the form of an isolated single cell or a cultured cell, or can be part of higher organized unit, for example, a plant tissue, plant organ, or plant. Thus, a plant cell can be a protoplast, a gamete producing cell, or a cell or collection of cells that can regenerate into a whole plant. As such, a seed, which comprises multiple plant cells and is capable of regenerating into a whole plant, is considered plant cell for purposes of this disclosure. A plant tissue or plant organ can be a seed, protoplast, callus, or any other groups of plant cells that is organized into a structural or functional unit. Particularly useful parts of a plant include harvestable parts and parts useful for propagation of progeny plants. A harvestable part of a plant can be any useful part of a plant, for example, flowers, pollen, seedlings, tubers, leaves, stems, fruit, seeds, roots, and the like. A part of a plant useful for propagation includes, for example, seeds, fruits, cuttings, seedlings, tubers, rootstocks, and the like.
A method of the invention can generate a plant containing chloroplasts that are genetically modified to contain a stably integrated polynucleotide (Hager and Bock, Appl. Microbiol. Biotechnol. 54:302-310, 2000). Accordingly, the present invention further provides a transgenic (transplastomic) plant, e.g. C. reinhardtii , which comprises one or more chloroplasts containing a polynucleotide encoding one or more heterologous polypeptides, including polypeptides that can specifically associate to form a functional protein complex.
In some instances, transformants and/or transplastomic plants comprising a recombinant polynucleotide encoding a single enzyme of a particular biodegradative pathway (e.g., the cellulosic pathway), may be combined with transformants comprising recombinant polynucleotides encoding the other enzymes of the biodegradative pathway. For example, where a biochemical pathway utilizes four enzymes to produce a product from a substrate, four transformant lines may be combined to provide the enzymes of that pathway. Such combinations may contain as many transformant lines as is necessary to comprise a mixture of cells producing the entire enzyme pathway, or a portion thereof. Additionally, such combinations may comprise different ratios of cells of the different transformants. For example, where one enzyme of a degradative pathway is the rate limiting step in the pathway, a combination of cells may contain 2, 3, 4, 5, 6, 7, 8, 9, 10 times or higher numbers of cells producing the rate limiting enzyme. One of skill in the art will recognize that multiple combinations of ratios of transformants may be achieved through simple methods (e.g., weighing dried tranformants and combining). Alternately, individual enzymes may be isolated from the transformants (e.g., “cracking” algal transformants to isolate sequestered enzymes) and then combined following isolation. Such approaches may allow for tailoring of enzyme concentrations to different biomass or other substrate materials which may contain different relative ratios of substrates or other components.
In some instances, a protein produced by a transgenic organism of the present invention is isolated after it is produced. Therefore, the present invention also contemplates a method of producing a heterologous polypeptide or protein complex in a chloroplast or in a transgenic plant which may include a step of isolating an expressed polypeptide or protein complex from the plant cell chloroplasts. As used herein, the term “isolated” or “substantially purified” means that a polypeptide or polynucleotide being referred to is in a form that is relatively free of proteins, nucleic acids, lipids, carbohydrates or other materials with which it is naturally associated. An isolated polypeptide (or polynucleotide) may constitute at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 6061, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, or 100 percent of a sample.
A polypeptide or protein complex can be isolated from chloroplasts using any method suitable for the particular polypeptide or protein complex, including, for example, salt fractionation methods and chromatography methods such as an affinity chromatography method using a ligand or receptor that specifically binds the polypeptide or protein complex. A determination that a polypeptide or protein complex produced according to a method of the invention is in an isolated form can be made using well known methods, for example, by performing electrophoresis and identifying the particular molecule as a relatively discrete band or the particular complex as one of a series of bands. Accordingly, the present invention also provides an isolated polypeptide or protein complex produced by a method of the invention. In some instances, an enzyme of the present invention may be produced but sequestered in the chloroplast. In such embodiments, access to the active enzyme may be had upon “cracking” the cells containing the enzyme (e.g., using mechanical, chemical, and/or biological means to disrupt the cell wall). The timing of such cracking may be planned to occur at the time the enzyme(s) produced by the cells are to be utilized to perform their enzymatic capabilities. In other instances, the enzyme may be secreted by the host cell. In such instances, the enzyme may be collected directly from the culture medium of the organism. Enzymes present in such media may be used directly, without purification, may be dried (e.g., air dried, lyophilized), and/or may be subjected to purification by any means known in the art (e.g., affinity chromatography, high performance liquid chromatography).
Examples of biomass-degrading enzymes and the nucleic acids that encode those enzymes are shown in Table I. Non-limiting examples of biomass-degrading enzymes include: cellulolytic enzymes, hemicellulolytic enzymes, pectinolytic enzymes, xylanases, ligninolytic enzymes, cellulases, cellobiases, softening enzymes (e.g., endopolygalacturonase), amylases, lipases, proteases, RNAses, DNAses, inulinase, lysing enzymes, phospholipases, pectinase, pullulanase, glucose isomerase, endoxylanase, beta-xylosidase, alpha-L-arabinofuranosidase, alpha-glucoronidase, alpha-galactosidase, acetylxylan esterase, and feruloyl esterase. Examples of genes that encode such enzymes include, but are not limited to, amylases, cellulases, hemicellulases, (e.g., β-glucosidase, endocellulase, exocellulase), exo-β-glucanase, endo-β-glucanase and xylanse (endoxylanase and exoxylanse). Examples of ligninolytic enzymes include, but are not limited to, lignin peroxidase and manganese peroxidase from Phanerochaete chryososporium . One of skill in the art will recognize that these enzymes are only a partial list of enzymes which could be used in the present invention.





TABLE 1



Examples of Biomass-degrading enzymes







#
Target (family)
Source
AA
NCBI prot. ID










Exo-β-glucanase




1.
CBH I (7)

Trichoderma viride

514
AAQ76092

2.
CBH II (6)

T. reesei

471
AAA72922

3.
CBH I (7)

Aspergillus

540
BAA25183




aculeatus



Endo-β-glucanase

4.
EG I (7)

T. reesei

459
AAA34212

5.
EG III (5)

T. reesei

218
AAA34213

6.
EG V (45)

T. reesei

242
CAA83846

7.
EGL A (12)

A. niger

239
CAA11964


β-glucosidase

8.
BGL I (3)

T. reesei

744
AAA18473

9.
BGL II (1)

T. reesei

466
BAA74959

10.
BGL I (3)

A. niger

860
ABG46337


Endoxylanase

11.
XYN I (11)

T. reesei

222
CAA49293

12.
XYN II (11)

T. reesei

229
CAA49294








































Biomass-production modulating agents include agents that increase biomass production in an organism, e.g., photosynthetic organism.
Host Cells/Organism
The present invention also contemplates a host cell transformed with one or more of the nucleic acids herein. In preferred embodiments, the host cell is photosynthetic. In some cases, the host cell is photosynthetic and non-vascular. In other cases, the host cell is photosynthetic and vascular. The host cell can be eukaryotic or prokaryotic.
The host cell is transfected with a vector described herein (e.g., a vector comprising one or more biomass degrading enzymes and/or one or more biomass-production modulating agents). The vector may contain a plastid promoter or a nucleic promoter for transfecting a chloroplast or other plastid of the host cell. The vector may also encode a fusion protein or agent that selectively targets the vector product to the chloroplast or other plastid. Transfection of a host cell can occur using any method known in the art.
A host organism is an organism comprising a host cell. In preferred embodiments, the host organism is photosynthetic. A photosynthetic organism is one that naturally photosynthesizes (has a plastid) or that is genetically engineered or otherwise modified to be photosynthetic. In some instances, a photosynthetic organism may be transformed with a construct of the invention which renders all or part of the photosynthetic apparatus inoperable. In some instances it is non-vascular and photosynthetic. The host cell can be prokaryotic. Examples of some prokaryotic organisms of the present invention include, but are not limited to cyanobacteria (e.g., Synechococcus, Synechocystis, Athrospira ). The host organism can be unicellular or multicellular. In most embodiments, the host organism is eukaryotic (e.g. green algae). Examples of organisms contemplated herein include, but are not limited to, rhodophyta, chlorophyta, heterokontophyta, tribophyta, glaucophyta, chlorarachniophytes, euglenoids, haptophyta, cryptomonads, dinoflagellata, and phytoplankton.
A host organism may be grown under conditions which permit photosynthesis, however, this is not a requirement (e.g., a host organism may be grown in the absence of light). In some instances, the host organism may be genetically modified in such a way that photosynthetic capability is diminished and/or destroyed (see examples below). In growth conditions where a host organism is not capable of photosynthesis (e.g., because of the absence of light and/or genetic modification), typically, the organism will be provided with the necessary nutrients to support growth in the absence of photosynthesis. For example, a culture medium in (or on) which an organism is grown, may be supplemented with any required nutrient, including an organic carbon source, nitrogen source, phosphorous source, vitamins, metals, lipids, nucleic acids, micronutrients, or an organism-specific requirement. Organic carbon sources include any source of carbon which the host organism is able to metabolize including, but not limited to, acetate, simple carbohydrates (e.g., glucose, sucrose, lactose), complex carbohydrates (e.g., starch, glycogen), proteins, and lipids. One of skill in the art will recognize that not all organisms will be able to sufficiently metabolize a particular nutrient and that nutrient mixtures may need to be modified from one organism to another in order to provide the appropriate nutrient mix.
A host organism can be grown on land, e.g., ponds, aqueducts, landfills, or in closed or partially closed bioreactor systems. The host organisms herein can also be grown directly in water, e.g., in ocean, sea, on lakes, rivers, reservoirs, etc. In embodiments where algae are mass-cultured, the algae can be grown in high density photobioreactors Methods of mass-culturing algae are known. For example, algae can be grown in high density photobioreactors (see, e.g., Lee et al, Biotech. Bioengineering 44:1161-1167, 1994) and other bioreactors (such as those for sewage and waste water treatments) (e.g., Sawayama et al, Appl. Micro. Biotech., 41:729-731, 1994). Additionally, algae may be mass-cultured to remove heavy metals (e.g., Wilkinson, Biotech. Letters, 11:861-864, 1989), hydrogen (e.g., U.S. Patent Application Publication No. 20030162273), and pharmaceutical compounds
In some cases, host organism(s) are grown near ethanol production plants or other facilities or regions (e.g., electrical generating plants, concrete plants, oil refineries, other industrial facilities, cities, highways, etc.) generating CO 2 . As such, the methods herein contemplate business methods for selling carbon credits to ethanol plants or other facilities or regions generating CO 2 while making or catalyzing the production of fuels by growing one or more of the modified organisms described herein near the ethanol production plant.
Biomass
As used herein, “biomass” is any organic material. In some instances, biomass is substantially free or free of starch and simple sugars. Biomass can be broken down into starch or simple sugars that can be subsequently utilized for the production of fuel. Any cellulosic or lignocellulosic material and materials comprising cellulose, hemicellulose, lignin, starch, oligosaccharides and/or monosaccharides are also considered to be biomass. Biomass may also comprise additional components, such as protein and/or lipid. Biomass may be derived from a single source, or biomass can comprise a mixture derived from more than one source; for example, biomass could comprise a mixture of corn cobs and corn stover, or a mixture of grass and leaves. Biomass includes, but is not limited to, bioenergy crops, agricultural residues, municipal solid waste, industrial solid waste, sludge from paper manufacture, yard waste, wood and forestry waste. Examples of biomass include, but are not limited to, corn grain, corn cobs, crop residues such as corn husks, corn stover, grasses, wheat, wheat straw, barley, barley straw, hay, rice straw, switchgrass, waste paper, sugar cane bagasse, sorghum, soy, components obtained from milling of grains, trees, branches, roots, leaves, wood chips, sawdust, paper, shrubs and bushes, vegetables, fruits, flowers and animal manure.
Agricultural waste is one form of biomass used for the production of fuel. Non-limiting examples of agricultural waste include corn stover, wheat stover, and soy stover. Another source of biomass in this invention is a high cellulose content organism. A high cellulose content organism is an organism whose weight is at least 30% or more attributable to biomass that is substantially free of starch or simple sugars. High cellulose content organism(s) can be selectively grown in large quantities to produce biomass, which can be degraded with biomass-degrading enzyme(s) of this invention to create starch and simple sugars. Examples of high cellulose content organisms include, but are not limited to: willow, duckweed, sugarbeets, and switchgrass.
A third example of biomass comprises organisms that are genetically modified to have an increased cellulose or biomass. Such organisms are optionally photosynthetic and may comprise a host cell incorporating a vector that encodes a biomass production-modulating agent. In some instances, the same vector can encode both a biomass production-modulating agent and a biomass-degrading enzyme. In some instances, the vector encoding the biomass production-modulating agent and the vector encoding the biomass degrading enzyme are separate.
Fuel Production
The present invention relates to methods of producing a biofuel. Such methods comprise expressing a gene encoding a biomass-degrading enzyme in a photosynthetic organism (e.g., non-vascular). The method further comprises utilizing the biomass-degrading enzyme and breaking down biomass with the enzyme. To produce a biofuel, the method may further involve refining the degraded biomass. The final product (e.g., ethanol) may then be mixed with one or more other biofuels.
The invention relates to a method of producing a biofuel comprising expressing a vector or vectors encoding a biomass-degrading enzyme, a biomass-degrading enzymatic pathway, and/or a biomass production-modulating agent in photosynthetic organism (e.g., non-vascular). In this embodiment, the host cell comprising the vector could then both make and degrade its own biomass. The method can comprise extracting only the product of the biomass degradation. In this manner, the enzyme would not have to be extracted to use for the creation of a biofuel. The production of the biofuel may further involve refining the product of the breaking down of the biomass. The production of biofuel may also involve the utilization of saccharification tanks. Such devices are well known in the art, see, for example U.S. Pat. Nos. 5,114,491; 5,534,075; and 5,559,031 (each of which is herein incorporated by reference).
In some embodiments, the biofuel is ethanol or other biologically produced alcohols. The refining may include a fermentation step to produce ethanol from products of biomass degradation including starch and simple sugars. Thus, refining may include using microorganisms which are capable of fermenting starch, simple sugars, and/or biomass materials, including, but not limited to Saccharomyces cerevisiae and Zymomonas mobilis.
The following examples merely illustrate the invention disclosed herein, but do not limit it.
EXAMPLES
Example 1
Production of Endo-β-glucanase in C. reinhardtii
In this example a nucleic acid encoding endo-β-glucanase from T. reesei was introduced into C. reinhardtii . Transforming DNA (SEQ ID NO. 20, Table 4) is shown graphically in FIG. 2A . In this instance the segment labeled “Transgene” is the endo-β-glucanase encoding gene (SEQ ID NO. 16, Table 3), the segment labeled “psbA 5′UTR” is the 5′ UTR and promoter sequence for the psbA gene from C. reinhardtii , the segment labeled “psbA 3′UTR” contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the psbA loci of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the psbA locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
For these experiments, all transformations were carried out on C. reinhardtii strain 137c (mt+). Cells were grown to late log phase (approximately 7 days) in the presence of 0.5 mM 5-fluorodeoxyuridine in TAP medium (Gorman and Levine, Proc. Natl. Acad. Sci., USA 54:1665-1669, 1965, which is incorporated herein by reference) at 23° C. under constant illumination of 450 Lux on a rotary shaker set at 100 rpm. Fifty ml of cells were harvested by centrifugation at 4,000×g at 23° C. for 5 min. The supernatant was decanted and cells resuspended in 4 ml TAP medium for subsequent chloroplast transformation by particle bombardment (Cohen et al., supra, 1998). All transformations were carried out under kanamycin selection (150 μg/ml) in which resistance was conferred by the gene encoded by the segment in FIG. 2 labeled “Selection Marker.” (Chlamydomonas Stock Center, Duke University).
PCR was used to identify transformed strains. For PCR analysis, 10 6 algae cells (from agar plate or liquid culture) were suspended in 10 mM EDTA and heated to 95° C. for 10 minutes, then cooled to near 23° C. A PCR cocktail consisting of reaction buffer, MgCl2, dNTPs, PCR primer pair(s) (Table 2 and shown graphically in FIG. 3A ), DNA polymerase, and water was prepared. Algae lysate in EDTA was added to provide template for reaction. Magnesium concentration is varied to compensate for amount and concentration of algae lysate in EDTA added. Annealing temperature gradients were employed to determine optimal annealing temperature for specific primer pairs.
To identify strains that contain the endo-β-glucanase gene, a primer pair was used in which one primer anneals to a site within the psbA 5′UTR (SEQ ID NO. 1) and the other primer anneals within the endo-β-glucanase coding segment (SEQ ID NO. 3). Desired clones are those that yield a PCR product of expected size. To determine the degree to which the endogenous gene locus is displaced (heteroplasmic vs. homoplasmic), a PCR reaction consisting of two sets of primer pairs were employed (in the same reaction). The first pair of primers amplifies the endogenous locus targeted by the expression vector and consists of a primer that anneals within the psbA 5′UTR (SEQ ID NO. 8) and one that anneals within the psbA coding region (SEQ ID NO. 9). The second pair of primers (SEQ ID NOs. 6 and 7) amplifies a constant, or control region that is not targeted by the expression vector, so should produce a product of expected size in all cases. This reaction confirms that the absence of a PCR product from the endogenous locus did not result from cellular and/or other contaminants that inhibited the PCR reaction. Concentrations of the primer pairs are varied so that both reactions work in the same tube; however, the pair for the endogenous locus is 5× the concentration of the constant pair. The number of cycles used was >30 to increase sensitivity. The most desired clones are those that yield a product for the constant region but not for the endogenous gene locus. Desired clones are also those that give weak-intensity endogenous locus products relative to the control reaction.
Results from this PCR on 96 clones were determined and the results are shown in FIG. 4 . FIG. 4A shows PCR results using the transgene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the exo-β-glucanase gene (e.g. numbers 1-14). FIG. 4B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene (e.g. numbers 1-14). Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis.





TABLE 2



PCR primers.





SEQ ID NO.
Use
Sequence








1.
psbA 5′ UTR forward primer
GTGCTAGGTAACTAACGTTTGATTTTT




2.
Exo-β-glucanase reverse primer
AACCTTCCACGTTAGCTTGA



3.
Endo-β-glucanase reverse primer
GCATTAGTTGGACCACCTTG



4.
β-glucosidase reverse primer
ATCACCTGAAGCAGGTTTGA



5.
Endoxylanase reverse primer
GCACTACCTGATGAAAAATAACC



6.
Control forward primer
CCGAACTGAGGTTGGGTTTA



7.
Control reverse primer
GGGGGAGCGAATAGGATTAG



8.
psbA 5′ UTR forward primer (wild-type)
GGAAGGGGACGTAGGTACATAAA



9.
psbA 3′ reverse primer (wild-type)
TTAGAACGTGTTTTGTTCCCAAT



10.
psbC 5′ UTR forward primer
TGGTACAAGAGGATTTTTGTTGTT



11.
psbD 5′ UTR forward primer
AAATTTAACGTAACGATGAGTTG



12.
atpA 5′ UTR forward primer
CCCCTTACGGGCAAGTAAAC



13.
3HB forward primer (wild-type)
CTCGCCTATCGGCTAACAAG



14.
3HB forward primer (wild-type)
CACAAGAAGCAACCCCTTGA


















































To ensure that the presence of the endo-β-glucanase-encoding gene led to expression of the endo-β-glucanase protein, a Western blot was performed. Approximately 1×10 8 algae cells were collected from TAP agar medium and suspended in 0.5 ml of lysis buffer (750 mM Tris, pH=8.0, 15% sucrose, 100 mM beta-mercaptoethanol). Cells were lysed by sonication (5×30 sec at 15% power). Lysate was mixed 1:1 with loading buffer (5% SDS, 5% beta-mercaptoethanol, 30% sucrose, bromophenol blue) and proteins were separated by SDS-PAGE, followed by transfer to PVDF membrane. The membrane was blocked with TBST+5% dried, nonfat milk at 23° C. for 30 min, incubated with anti-FLAG antibody (diluted 1:1,000 in TBST+5% dried, nonfat milk) at 4° C. for 10 hours, washed three times with TBST, incubated with horseradish-linked anti-mouse antibody (diluted 1:10,000 in TBST+5% dried, nonfat milk) at 23° C. for 1 hour, and washed three times with TBST. Proteins were visualized with chemiluminescent detection. Results from multiple clones ( FIG. 4C ) show that expression of the endo-β-glucanase gene in C. reinhardtii cells resulted in production of the protein.
Cultivation of C. reinhardtii transformants for expression of endo-β-glucanase was carried out in liquid TAP medium at 23° C. under constant illumination of 5,000 Lux on a rotary shaker set at 100 rpm, unless stated otherwise. Cultures were maintained at a density of 1×10 7 cells per ml for at least 48 hr prior to harvest.
To determine if the endo-β-glucanase produced by transformed alga cells was functional, endo-β-glucanase activity was tested using a filter paper assay (Xiao et al., Biotech. Bioengineer. 88, 832-37, 2004). Briefly, 500 ml of algae cell culture was harvested by centrifugation at 4000×g at 4° C. for 15 min. The supernatant was decanted and the cells resuspended in 10 ml of lysis buffer (100 mM Tris-HCl, pH=8.0, 300 mM NaCl, 2% Tween-20). Cells were lysed by sonication (10×30 sec at 35% power). Lysate was clarified by centrifugation at 14,000×g at 4° C. for 1 hour. The supernatant was removed and incubated with anti-FLAG antibody-conjugated agarose resin at 4° C. for 10 hours. Resin was separated from the lysate by gravity filtration and washed 3× with wash buffer ((100 mM Tris-HCl, pH=8.0, 300 mM NaCl, 2% Tween-20). Endo-β-glucanase was eluted by incubation of the resin with elution buffer (TBS, 250 ug/ml FLAG peptide). Results from Western blot analysis of samples collect after each step ( FIG. 4D ) show that the endo-β-glucanase protein was isolated. A 20 μl aliquot of diluted enzyme was added into wells containing 40 μl of 50 mM NaAc buffer and a filter paper disk. After 60 minutes incubation at 50° C., 120 μl of DNS was added to each reaction and incubated at 95° C. for 5 minutes. Finally, a 36 μl aliquot of each sample was transferred to the wells of a flat-bottom plate containing 160 μl water. The absorbance at 540 nm was measured. The results for two transformed strains indicated that the isolated enzyme was functional (absorbance of 0.33 and 0.28).
Example 2
Production of Exo-β-glucanase in C. reinhardtii
In this example a nucleic acid encoding exo-β-glucanase from T. viride was introduced into C. reinhardtii . Transforming DNA (SEQ ID NO. 19, Table 4) is shown graphically in FIG. 2A . In this instance the segment labeled “Transgene” is the exo-β-glucanase encoding gene (SEQ ID NO. 15, Table 3), the segment labeled “psbA 5′UTR” is the 5′ UTR and promoter sequence for the psbA gene from C. reinhardtii , the segment labeled “psbA 3′UTR” contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the psbA loci of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the psbA locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
For these experiments, all transformations were carried out on C. reinhardtii strain 137c (mt+). Cells were grown to late log phase (approximately 7 days) in the presence of 0.5 mM 5-fluorodeoxyuridine in TAP medium (Gorman and Levine, Proc. Natl. Acad. Sci., USA 54:1665-1669, 1965, which is incorporated herein by reference) at 23° C. under constant illumination of 450 Lux on a rotary shaker set at 100 rpm. Fifty ml of cells were harvested by centrifugation at 4,000×g at 23° C. for 5 min. The supernatant was decanted and cells resuspended in 4 ml TAP medium for subsequent chloroplast transformation by particle bombardment (Cohen et al., supra, 1998). All transformations were carried out under kanamycin selection (150 μg/ml), in which resistance was conferred by the gene encoded by the segment in FIG. 2 labeled “Selection Marker.” (Chlamydomonas Stock Center, Duke University).
PCR was used to identify transformed strains. For PCR analysis, 10 6 algae cells (from agar plate or liquid culture) were suspended in 10 mM EDTA and heated to 95° C. for 10 minutes, then cooled to near 23° C. A PCR cocktail consisting of reaction buffer, MgCl2, dNTPs, PCR primer pair(s) (Table 2 and shown graphically in FIG. 3A ), DNA polymerase, and water was prepared. Algae lysate in EDTA was added to provide template for reaction. Magnesium concentration is varied to compensate for amount and concentration of algae lysate in EDTA added. Annealing temperature gradients were employed to determine optimal annealing temperature for specific primer pairs.
To identify strains that contain the exo-β-glucanase gene, a primer pair was used in which one primer anneals to a site within the psbA 5′UTR (SEQ ID NO. 1) and the other primer anneals within the exo-β-glucanase coding segment (SEQ ID NO. 2). Desired clones are those that yield a PCR product of expected size. To determine the degree to which the endogenous gene locus is displaced (heteroplasmic vs. homoplasmic), a PCR reaction consisting of two sets of primer pairs were employed (in the same reaction). The first pair of primers amplifies the endogenous locus targeted by the expression vector and consists of a primer that anneals within the psbA 5′UTR (SEQ ID NO. 8) and one that anneals within the psbA coding region (SEQ ID NO. 9). The second pair of primers (SEQ ID NOs. 6 and 7) amplifies a constant, or control region that is not targeted by the expression vector, so should produce a product of expected size in all cases. This reaction confirms that the absence of a PCR product from the endogenous locus did not result from cellular and/or other contaminants that inhibited the PCR reaction. Concentrations of the primer pairs are varied so that both reactions work in the same tube; however, the pair for the endogenous locus is 5× the concentration of the constant pair. The number of cycles used was >30 to increase sensitivity. The most desired clones are those that yield a product for the constant region but not for the endogenous gene locus. Desired clones are also those that give weak-intensity endogenous locus products relative to the control reaction.
Results from this PCR on 96 clones were determined and the results are shown in FIG. 5 . FIG. 5A shows PCR results using the transgene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the endo-β-glucanase gene (e.g. numbers 1-14). FIG. 4B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene (e.g. numbers 1-14). Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis.
To ensure that the presence of the exo-β-glucanase-encoding gene led to expression of the exo-β-glucanase protein, a Western blot was performed. Approximately 1×10 8 algae cells were collected from TAP agar medium and suspended in 0.5 ml of lysis buffer (750 mM Tris, pH=8.0, 15% sucrose, 100 mM beta-mercaptoethanol). Cells were lysed by sonication (5×30 sec at 15% power). Lysate was mixed 1:1 with loading buffer (5% SDS, 5% beta-mercaptoethanol, 30% sucrose, bromophenol blue) and proteins were separated by SDS-PAGE, followed by transfer to PVDF membrane. The membrane was blocked with TBST+5% dried, nonfat milk at 23° C. for 30 min, incubated with anti-FLAG antibody (diluted 1:1,000 in TBST+5% dried, nonfat milk) at 4° C. for 10 hours, washed three times with TBST, incubated with horseradish-linked anti-mouse antibody (diluted 1:10,000 in TBST+5% dried, nonfat milk) at 23° C. for 1 hour, and washed three times with TBST. Proteins were visualized with chemiluminescent detection. Results from multiple clones ( FIG. 5C ) show that expression of the exo-β-glucanase gene in C. reinhardtii cells resulted in production of the protein.
Cultivation of C. reinhardtii transformants for expression of endo-β-glucanase was carried out in liquid TAP medium at 23° C. under constant illumination of 5,000 Lux on a rotary shaker set at 100 rpm, unless stated otherwise. Cultures were maintained at a density of 1×10 7 cells per ml for at least 48 hr prior to harvest.
To determine if the exo-β-glucanase produced by transformed alga cells was functional, exo-β-glucanase activity was tested using a filter paper assay (Xiao et al., Biotech. Bioengineer. 88, 832-37, 2004). Briefly, 500 ml of algae cell culture was harvested by centrifugation at 4000×g at 4° C. for 15 min. The supernatant was decanted and the cells resuspended in 10 ml of lysis buffer (100 mM Tris-HCl, pH=8.0, 300 mM NaCl, 2% Tween-20). Cells were lysed by sonication (10×30 sec at 35% power). Lysate was clarified by centrifugation at 14,000×g at 4° C. for 1 hour. The supernatant was removed and incubated with anti-FLAG antibody-conjugated agarose resin at 4° C. for 10 hours. Resin was separated from the lysate by gravity filtration and washed 3× with wash buffer (100 mM Tris-HCl, pH=8.0, 300 mM NaCl, 2% Tween-20). Exo-β-glucanase was eluted by incubation of the resin with elution buffer (TBS, 250 ug/ml FLAG peptide). Results from Western blot analysis of samples collect after each step ( FIG. 5D ) show that the exo-β-glucanase protein was isolated. A 20 μl aliquot of diluted enzyme was added into wells containing 40 μl of 50 mM NaAc buffer and a filter paper disk. After 60 minutes incubation at 50° C., 120 μl of DNS was added to each reaction and incubated at 95° C. for 5 minutes. Finally, a 36 μl aliquot of each sample was transferred to the wells of a flat-bottom plate containing 160 μl water. The absorbance at 540 nm was measured. The results for two transformed strains indicated that the isolated enzyme was functional (absorbance of 0.20 and 0.45).
Example 3
Production of α-Glucosidase in C. reinhardti
In this example a nucleic acid encoding β-glucosidase from T. reesei was introduced into C. reinhardtii . Transforming DNA (SEQ ID NO. 21, Table 4) is shown graphically in FIG. 2A . The amino acid sequence encoded by this gene is shown in Table 3. In this instance the segment labeled “Transgene” is the β-glucosidase encoding gene (SEQ ID NO. 17, Table 3), the segment labeled “psbA 5′UTR” is the 5′ UTR and promoter sequence for the psbA gene from C. reinhardtii , the segment labeled “psbA 3′UTR” contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the psbA loci of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the psbA locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
For these experiments, all transformations were carried out on C. reinhardtii strain 137c (mt+). Cells were grown to late log phase (approximately 7 days) in the presence of 0.5 mM 5-fluorodeoxyuridine in TAP medium (Gorman and Levine, Proc. Natl. Acad. Sci., USA 54:1665-1669, 1965, which is incorporated herein by reference) at 23° C. under constant illumination of 450 Lux on a rotary shaker set at 100 rpm. Fifty ml of cells were harvested by centrifugation at 4,000×g at 23° C. for 5 min. The supernatant was decanted and cells resuspended in 4 ml TAP medium for subsequent chloroplast transformation by particle bombardment (Cohen et al., supra, 1998). All transformations were carried out under kanamycin selection (150 μg/ml), in which resistance was conferred by the gene encoded by the segment in FIG. 2 labeled “Selection Marker.” (Chlamydomonas Stock Center, Duke University).
PCR was used to identify transformed strains. For PCR analysis, 10 6 algae cells (from agar plate or liquid culture) were suspended in 10 mM EDTA and heated to 95° C. for 10 minutes, then cooled to near 23° C. A PCR cocktail consisting of reaction buffer, MgCl2, dNTPs, PCR primer pair(s) (Table 2 and shown graphically in FIG. 3A ), DNA polymerase, and water was prepared. Algae lysate in EDTA was added to provide template for reaction. Magnesium concentration is varied to compensate for amount and concentration of algae lysate in EDTA added. Annealing temperature gradients were employed to determine optimal annealing temperature for specific primer pairs.
To identify strains that contain the β-glucosidase gene, a primer pair was used in which one primer anneals to a site within the psbA 5′UTR (SEQ ID NO. 1) and the other primer anneals within the β-glucosidase coding segment (SEQ ID NO. 4). Desired clones are those that yield a PCR product of expected size. To determine the degree to which the endogenous gene locus is displaced (heteroplasmic vs. homoplasmic), a PCR reaction consisting of two sets of primer pairs were employed (in the same reaction). The first pair of primers amplifies the endogenous locus targeted by the expression vector and consists of a primer that anneals within the psbA 5′UTR (SEQ ID NO. 8) and one that anneals within the psbA coding region (SEQ ID NO. 9). The second pair of primers (SEQ ID NOs. 6 and 7) amplifies a constant, or control region that is not targeted by the expression vector, so should produce a product of expected size in all cases. This reaction confirms that the absence of a PCR product from the endogenous locus did not result from cellular and/or other contaminants that inhibited the PCR reaction. Concentrations of the primer pairs are varied so that both reactions work in the same tube; however, the pair for the endogenous locus is 5× the concentration of the constant pair. The number of cycles used was >30 to increase sensitivity. The most desired clones are those that yield a product for the constant region but not for the endogenous gene locus. Desired clones are also those that give weak-intensity endogenous locus products relative to the control reaction.
Results from this PCR on 96 clones were determined and the results are shown in FIG. 6 . FIG. 6A shows PCR results using the transgene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the endo-β-glucanase gene (e.g. numbers 1-9). FIG. 6B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene (e.g. numbers 1-9). Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis.
To ensure that the presence of the β-glucosidase-encoding gene led to expression of the β-glucosidase protein, a Western blot was performed. Approximately 1×10 8 algae cells were collected from TAP agar medium and suspended in 0.5 ml of lysis buffer (750 mM Tris, pH=8.0, 15% sucrose, 100 mM beta-mercaptoethanol). Cells were lysed by sonication (5×30 sec at 15% power). Lysate was mixed 1:1 with loading buffer (5% SDS, 5% beta-mercaptoethanol, 30% sucrose, bromophenol blue) and proteins were separated by SDS-PAGE, followed by transfer to PVDF membrane. The membrane was blocked with TBST+5% dried, nonfat milk at 23° C. for 30 min, incubated with anti-FLAG antibody (diluted 1:1,000 in TBST+5% dried, nonfat milk) at 4° C. for 10 hours, washed three times with TBST, incubated with horseradish-linked anti-mouse antibody (diluted 1:10,000 in TBST+5% dried, nonfat milk) at 23° C. for 1 hour, and washed three times with TBST. Proteins were visualized with chemiluminescent detection. Results from multiple clones ( FIG. 6C ) show that expression of the β-glucosidase gene in C. reinhardtii cells resulted in production of the protein.
To determine if the β-glucosidase produced by transformed alga cells was functional, β-glucosidase activity was tested using an enzyme function assay. Briefly, 500 ml of algae cell culture was harvested by centrifugation at 4000×g at 4° C. for 15 min. The supernatant was decanted and the cells resuspended in 10 ml of lysis buffer (100 mM Tris-HCl, pH=8.0, 300 mM NaCl, 2% Tween-20). Cells were lysed by sonication (10×30 sec at 35% power). Lysate was clarified by centrifugation at 14,000×g at 4° C. for 1 hour. The supernatant was removed and incubated with anti-FLAG antibody-conjugated agarose resin at 4° C. for 10 hours. Resin was separated from the lysate by gravity filtration and washed 3× with wash buffer ((100 mM Tris-HCl, pH=8.0, 300 mM NaCl, 2% Tween-20). β-glucosidase was eluted by incubation of the resin with elution buffer (TBS, 250 ug/ml FLAG peptide). Western blot analysis of samples collect after each step ( FIG. 6D ) show that the β-glucosidase protein was isolated. For each sample tested, 50 μl of p-Nitrophenyl-/3-D-glucoside (substrate), 90 μl of 0.1 M sodium acetate buffer (pH 4.8), and 10 μl enzyme was added to a microplate well. The reaction was incubated at 50° C. for one hour and then the reaction was stopped with a glycine buffer. The absorbance of the liberated p-nitrophenol was measured at 430 nm. The results for two transformed strains indicated that the isolated enzyme was functional (absorbance of 0.157 and 0.284).
Example 4
Production of Endoxylanase in C. reinhardtii
In this example a nucleic acid encoding endoxylanase from T. reesei was introduced into C. reinhardtii . Transforming DNA (SEQ ID NO. 22, Table 4) is shown graphically in FIG. 2A . The amino acid sequence encoded by this gene is shown in Table 3. In this instance the segment labeled “Transgene” is the endoxylanase encoding gene (SEQ ID NO. 18, Table 3), the segment labeled “psbA 5′UTR” is the 5′ UTR and promoter sequence for the psbA gene from C. reinhardtii , the segment labeled “psbA 3′UTR” contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the psbA loci of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the psbA locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
For these experiments, all transformations were carried out on C. reinhardtii strain 137c (mt+). Cells were grown to late log phase (approximately 7 days) in the presence of 0.5 mM 5-fluorodeoxyuridine in TAP medium (Gorman and Levine, Proc. Natl. Acad. Sci., USA 54:1665-1669, 1965, which is incorporated herein by reference) at 23° C. under constant illumination of 450 Lux on a rotary shaker set at 100 rpm. Fifty ml of cells were harvested by centrifugation at 4,000×g at 23° C. for 5 min. The supernatant was decanted and cells resuspended in 4 ml TAP medium for subsequent chloroplast transformation by particle bombardment (Cohen et al., supra, 1998). All transformations were carried out under kanamycin selection (150 μg/ml), in which resistance was conferred by the gene encoded by the segment in FIG. 2 labeled “Selection Marker.” (Chlamydomonas Stock Center, Duke University).
PCR was used to identify transformed strains. For PCR analysis, 106 algae cells (from agar plate or liquid culture) were suspended in 10 mM EDTA and heated to 95° C. for 10 minutes, then cooled to near 23° C. A PCR cocktail consisting of reaction buffer, MgCl2, dNTPs, PCR primer pair(s) (Table 2 and shown graphically in FIG. 3A ), DNA polymerase, and water was prepared. Algae lysate in EDTA was added to provide template for reaction. Magnesium concentration is varied to compensate for amount and concentration of algae lysate in EDTA added. Annealing temperature gradients were employed to determine optimal annealing temperature for specific primer pairs.
To identify strains that contain the endoxylanase gene, a primer pair was used in which one primer anneals to a site within the psbA 5′UTR (SEQ ID NO. 1) and the other primer anneals within the endoxylanase coding segment (SEQ ID NO. 5). Desired clones are those that yield a PCR product of expected size. To determine the degree to which the endogenous gene locus is displaced (heteroplasmic vs. homoplasmic), a PCR reaction consisting of two sets of primer pairs were employed (in the same reaction). The first pair of primers amplifies the endogenous locus targeted by the expression vector and consists of a primer that anneals within the psbA 5′UTR (SEQ ID NO. 8) and one that anneals within the psbA coding region (SEQ ID NO. 9). The second pair of primers (SEQ ID NOs. 6 and 7) amplifies a constant, or control region that is not targeted by the expression vector, so should produce a product of expected size in all cases. This reaction confirms that the absence of a PCR product from the endogenous locus did not result from cellular and/or other contaminants that inhibited the PCR reaction. Concentrations of the primer pairs are varied so that both reactions work in the same tube; however, the pair for the endogenous locus is 5× the concentration of the constant pair. The number of cycles used was >30 to increase sensitivity. The most desired clones are those that yield a product for the constant region but not for the endogenous gene locus. Desired clones are also those that give weak-intensity endogenous locus products relative to the control reaction.
Results from this PCR on 96 clones were determined and the results are shown in FIG. 7 . FIG. 7A shows PCR results using the transgene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the endo-β-glucanase gene (e.g. numbers 1-9). FIG. 7B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene (e.g. numbers 1-9). Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis.
To ensure that the presence of the endoxylanase-encoding gene led to expression of the endoxylanase protein, a Western blot was performed. Approximately 1×10 8 algae cells were collected from TAP agar medium and suspended in 0.5 ml of lysis buffer (750 mM Tris, pH=8.0, 15% sucrose, 100 mM beta-mercaptoethanol). Cells were lysed by sonication (5×30 sec at 15% power). Lysate was mixed 1:1 with loading buffer (5% SDS, 5% beta-mercaptoethanol, 30% sucrose, bromophenol blue) and proteins were separated by SDS-PAGE, followed by transfer to PVDF membrane. The membrane was blocked with TBST+5% dried, nonfat milk at 23° C. for 30 min, incubated with anti-FLAG antibody (diluted 1:1,000 in TBST+5% dried, nonfat milk) at 4° C. for 10 hours, washed three times with TBST, incubated with horseradish-linked anti-mouse antibody (diluted 1:10,000 in TBST+5% dried, nonfat milk) at 23° C. for 1 hour, and washed three times with TBST. Proteins were visualized with chemiluminescent detection. Results from multiple clones ( FIG. 7C ) show that expression of the endoxylanase gene in C. reinhardtii cells resulted in production of the protein.
To determine if the endoxylanase produced by transformed alga cells was functional, endoxylanase activity was tested using an enzyme function assay. Briefly, 500 ml of algae cell culture was harvested by centrifugation at 4000×g at 4° C. for 15 min. The supernatant was decanted and the cells resuspended in 10 ml of lysis buffer (100 mM Tris-HCl, pH=8.0, 300 mM NaCl, 2% Tween-20). Cells were lysed by sonication (10×30 sec at 35% power). Lysate was clarified by centrifugation at 14,000×g at 4° C. for 1 hour. The supernatant was removed and incubated with anti-FLAG antibody-conjugated agarose resin at 4° C. for 10 hours. Resin was separated from the lysate by gravity filtration and washed 3× with wash buffer ((100 mM Tris-HCl, pH=8.0, 300 mM NaCl, 2% Tween-20). Endoxylanase was eluted by incubation of the resin with elution buffer (TBS, 250 ug/ml FLAG peptide). Results from Western blot analysis of samples collect after each step ( FIG. 7D ) show that the Endoxylanase protein was isolated. To test for enzyme function, 0.5 ml aliquots of diluted enzyme preparation were added to glass test tubes and equilibrated at 40° C. for 5 minutes. A Xylazyme AX test tablet (Megazyme) was added to initiate the reaction. After 30 minutes, the reaction was terminated by adding 10 ml Trizma base solution with vigorous stirring. The tubes were incubated at room temperature for 5 minutes and the reaction was stirred again. The reaction was then filtered through a Whatman No. 1 (9 cm) filter circle. The filtrate was then clarified by microcentrifugation. The absorbance of the filtrate was measured at 590 nm. The results indicate that, for crude enzyme extracts from two different clones, endoxylanase activity was present (absorbance of 0.974 and 0.488).
Example 5
Determination of Level of Protein Expression in a C. reinhardtii Strain Producing Exogneous Endo-β-Glucanase
Western blot analysis of proteins was done as follows. Approximately 1×10 8 algae cells were collected from liquid cultures growing in TAP medium at 23° C. under constant illumination of 5,000 Lux on a rotary shaker set at 100 rpm. Cells were suspended in 0.5 ml of lysis buffer (750 mM Tris, pH=8.0, 15% sucrose, 100 mM beta-mercaptoethanol) and lysed by sonication (5×30 sec at 15% power). Lysates were centrifuged at 14,000 RPM for 15 minutes at 4° C. and the supernatant was collected. Total soluble protein concentrations were determined using BioRad's protein assay reagent. The sample concentrations were then normalized to one another. The FLAG control protein was a FLAG tagged bacterial alkaline phosphatase protein standard (Sigma-Aldrich, St. Louis, Mo.). Lysate was mixed 1:1 with loading buffer (5% SDS, 5% beta-mercaptoethanol, 30% sucrose, bromophenol blue) and proteins were separated by SDS-PAGE, followed by transfer to PVDF membrane. The membrane was blocked with TBST+5% dried, nonfat milk at 23° C. for 30 min, incubated with anti-FLAG antibody (diluted 1:1,000 in TBST+5% dried, nonfat milk) at 4° C. for 10 hours, washed three times with TBST, incubated with horseradish-linked anti-mouse antibody (diluted 1:10,000 in TBST+5% dried, nonfat milk) at 23° C. for 1 hour, and washed three times with TBST. Proteins were visualized with chemiluminescent detection.
To ascertain the level of cellulase accumulating in the transformants under different growth conditions, we carried out the titration shown in FIG. 8 . Five, ten and twenty μg of total protein from a transformant expressing endo-B-glucanase (BD5-26) were separated along with 10, 50, 100 and 200 ug of a control protein. Both proteins contain the FLAG epitope tag on their carboxy terminus, thus a direct comparison can be made between the two proteins to determine expression levels. A comparison of the signal intensity between the 5 ug samples form either 24 or 48 hours growth, show a signal greater than the 50 ng control peptide and close in intensity to the 100 ng sample. A 1% total protein expression level would equal 1/100 or 50 ng of a 5 ug sample. The intensity here shows a signal equal to a level of twice that, or 100 ng in the 5 ug sample which is equal to 2% of total protein.





TABLE 3



Amino Acid Sequences of Cellulolytic Enzymes.






SEQ




ID

NO.
Sequence
Source



15
MVPYRKLAVISAFLATARAQSACTLQSETHPPLTWQKCSSGGTCTQQTGSVVIDANWRWTHATNSSTNCYDGNTWSST
Exo-β-



LCPDNETCAKNCCLDGAAYASTYGVTTSGNSLSIGFVTQSAQKNVGARLYLMASDTTYQEFTLLGNEFSFDVDVSQLPC
glucanase


GLNGALYFVSMDADGGVSKYPTNTAGAKYGTGYCDSQCPRDLKFINGQANVEGWEPSSNNANTGIGGHGSCCSEMDIW
from T. viride


EANSISEALTPHPCTTVGQEICEGDGCGGTYSDNRYGGTCDPDGCDWDPYRLGNTSFYGPGSSFTLDTTKKLTVVTQFET


SGAINRYYVQNGVTFQQPNAELGSYSGNGLNDDYCTAEEAEFGGSSFSDKGGLTQFKKATSGGMVLVMSLWDDYYAN


MLWLDSTYPTNETSSTPGAVRGSCSTSSGVPAQVESQSPNAKVTFSNIKFGPIGSTGDPSGGNPPGGNPPGTTTTRRPATTT


GSSPGPTQSHYGQCGGIGYSGPTVCASGTTCQVLNPYYSQCLGTGENLYFQGSGGGGSDYKDDDDKGTG



16
MVPNKSVAPLLLAASILYGGAVAQQTVWGQCGGIGWSGPTNCAPGSACSTLNPYYAQCIPGATTITTSTRPPSGPTTTTRA
Endo-β-


TSTSSSTPPTSSGVRFAGVNIAGFDFGCTTDGTCVTSKVYPPLKNFTGSNNYPDGIGQMQHFVNEDGMTIFRLPVGWQYLV
glucanase


NNNLGGNLDSTSISKYDQLVQGCLSLGAYCIVDIHNYARWNGGIIGQGGPTNAQFTSLWSQLASKYASQSRVWFGIMNEP
from T. reesei


HDVNINTWAATVQEVVTAIRNAGATSQFISLPGNDWQSAGAFISDGSAAALSQVTNPDGSTTNLIFDVHKYLDSDNSGTHA


ECTTNNIDGAFSPLATWLRQNNRQAILTETGGGNVQSCIQDMCQQIQYLNQNSDVYLGYVGWGAGSFDSTYVLTETPTSSG


NSWTDTSLVSSCLARKGTGENLYFQGSGGGGSDYKDDDDKGTG



17
MVPLPKDFQWGFATAAYQIEGAVDQDGRGPSIWDTFCAQPGKIADGSSGVTACDSYNRTAEDIALLKSLGAKSYRFSISWS
β-glucosidase


RIIPEGGRGDAVNQAGIDHYVKFVDDLLDAGITPFITLFHWDLPEGLHQRYGGLLNRTEFPLDFENYARVMFRALPKVRNWI
from T. reesei


TFNEPLCSAIPGYGSGTFAPGRQSTSEPWTVGHNILVAHGRAVKAYRDDFKPASGDGQIGIVLNGDFTYPWDAADPADKEA


AERRLEFFTAWFADPIYLGDYPASMRKQLGDRLPTFTPEERALVHGSNDFYGMNHYTSNYIRHRSSPASADDTVGNVDVLFT


NKQGNCIGPETQSPWLRPCAAGFRDFLVWISKRYGYPPIYVTENGTSIKGESDLPKEKILEDDFRVKYYNEYIRAMVTAVELD


GVNVKGYFAWSLMDNFEWADGYVTRFGVTYVDYENGQKRFPKKSAKSLKPLFDELIAAAGTGENLYFQGSGGGGSDYKDD


DDKGTG



18
MVPVSFTSLLAASPPSRASCRPAAEVESVAVEKRQTIQPGTGYNNGYFYSYWNDGHGGVTYTNGPGGQFSVNWSNSGNFVG
Endo-


GKGWQPGTKNKVINFSGSYNPNGNSYLSVYGWSRNPLIEYYIVENFGTYNPSTGATKLGEVTSDGSVYDIYRTQRVNQPSIIG
xylanase


TATFYQYWSVRRNHRSSGSVNTANHFNAWAQQGLTLGTMDYQIVAVEGYFSSGSASITVSGTGENLYFQGSGGGGSDYKDD
from T. reesei


DDKGTG

















































Example 6
Construction of a C. reinhardtii Strain Transformed with Multiple Biodegradative Enzyme-Encoding Genes
In this example a strain containing multiple biomass degrading (BD) enzyme-encoding genes using two separate constructs is described. One of skill in the art will realize that such an approach is provided merely by way of example. Transformation of a strain with a single construct containing all the genes of interest is performed generally as described in prior examples. An example of constructs which could be used to transform such a strain is shown in FIG. 9 . As can be seen in the figure, two polynucleotides are constructed for the delivery of multiple genes into a host alga cell. The upper construct contains three enzyme-coding sequences ( FIG. 9 BD-5, BD-1, and BD-9). The lower construct contains three enzyme-coding sequences ( FIG. 9 BD-2, BD-4, and BD-11). The numbers used in this figure are meant only to indicate that different enzymes are encoded by each gene. In some instances, the genes encode different enzymes in one or more biomass degrading pathways. In other instances, one or more of the genes encode the same enzyme, but one may be a mutated form or some may be from multiple organisms. Both constructs contain terminal regions which have homology to the C. reinhardtii genome to facilitate integration into the chloroplast genome. Proper transformation, integration, protein production and protein function is analyzed as described above.
Each construct contains a selectable marker ( FIG. 9 Marker I and Marker II). The C. reinhardtii cells are transformed as described above. Introduction of the two constructs can be by co-transformation with both constructs. In such instances, potential transformants are selected by growth on TAP medium supplemented with substances which will select for the presence of both markers (e.g., streptomycin and kanamycin resistance).
The genes of both constructs may be placed under control of a single transcriptional control, in essence introducing a synthetic operon (“chloroperon”) into the chloroplasts of the alga cells. Such an approach allows for an entire pathway to be engineered into a chloroplast. Alternately, the separate constructs may be placed under control of different transcriptional regulators. Additionally, each gene so introduced may be placed under control of different transcriptional regulators.
Example 7
Construction of a C. reinhardtii Strain Transformed with a Construct that does not Disrupt Photosynthetic Capability
In this example a nucleic acid encoding endo-β-glucanase from T. reesei was introduced into C. reinhardtii . Transforming DNA (SEQ ID NO. 30, Table 4) is shown graphically in FIG. 2B . In this instance the segment labeled “Transgene” is the endo-β-glucanase encoding gene (SEQ ID NO. 16, Table 3), the segment labeled 5′ UTR is the 5′ UTR and promoter sequence for the psbD gene from C. reinhardtii , the segment labeled 3′ UTR contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the 3HB locus of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the 3HB locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
For these experiments, all transformations were carried out on C. reinhardtii strain 137c (mt+). Cells were grown to late log phase (approximately 7 days) in the presence of 0.5 mM 5-fluorodeoxyuridine in TAP medium (Gorman and Levine, Proc. Natl. Acad. Sci., USA 54:1665-1669, 1965, which is incorporated herein by reference) at 23° C. under constant illumination of 450 Lux on a rotary shaker set at 100 rpm. Fifty ml of cells were harvested by centrifugation at 4,000×g at 23° C. for 5 min. The supernatant was decanted and cells resuspended in 4 ml TAP medium for subsequent chloroplast transformation by particle bombardment (Cohen et al., supra, 1998). All transformations were carried out under kanamycin selection (100 μg/ml), in which resistance was conferred by the gene encoded by the segment in FIG. 2B labeled “Selection Marker.” (Chlamydomonas Stock Center, Duke University).
PCR was used to identify transformed strains. For PCR analysis, 10 6 algae cells (from agar plate or liquid culture) were suspended in 10 mM EDTA and heated to 95° C. for 10 minutes, then cooled to near 23° C. A PCR cocktail consisting of reaction buffer, MgCl2, dNTPs, PCR primer pair(s) (Table 2 and shown graphically in FIG. 3B ), DNA polymerase, and water was prepared. Algae lysate in EDTA was added to provide template for reaction. Magnesium concentration is varied to compensate for amount and concentration of algae lysate in EDTA added. Annealing temperature gradients were employed to determine optimal annealing temperature for specific primer pairs.
To identify strains that contain the endo-β-glucanase gene, a primer pair was used in which one primer anneals to a site within the psbD 5′UTR (SEQ ID NO. 11) and the other primer anneals within the endo-β-glucanase coding segment (SEQ ID NO. 3). Desired clones are those that yield a PCR product of expected size. To determine the degree to which the endogenous gene locus is displaced (heteroplasmic vs. homoplasmic), a PCR reaction consisting of two sets of primer pairs were employed (in the same reaction). The first pair of primers amplifies the endogenous locus targeted by the expression vector (SEQ ID NOs. 13 and 14). The second pair of primers (SEQ ID NOs. 6 and 7) amplifies a constant, or control region that is not targeted by the expression vector, so should produce a product of expected size in all cases. This reaction confirms that the absence of a PCR product from the endogenous locus did not result from cellular and/or other contaminants that inhibited the PCR reaction. Concentrations of the primer pairs are varied so that both reactions work in the same tube; however, the pair for the endogenous locus is 5× the concentration of the constant pair. The number of cycles used was >30 to increase sensitivity. The most desired clones are those that yield a product for the constant region but not for the endogenous gene locus. Desired clones are also those that give weak-intensity endogenous locus products relative to the control reaction.
Results from this PCR on 96 clones were determined and the results are shown in FIG. 14 . FIG. 14A shows PCR results using the transgene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the endo-β-glucanase gene (e.g. numbers 1, 4, and 14). FIG. 14B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene (e.g. numbers 1, 4, and 14). Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis.
To ensure that the presence of the endo-β-glucanase-encoding gene led to expression of the endo-β-glucanase protein, a Western blot was performed. Approximately 1×10 8 algae cells were collected from TAP agar medium and suspended in 0.5 ml of lysis buffer (750 mM Tris, pH=8.0, 15% sucrose, 100 mM beta-mercaptoethanol). Cells were lysed by sonication (5×30 sec at 15% power). Lysate was mixed 1:1 with loading buffer (5% SDS, 5% beta-mercaptoethanol, 30% sucrose, bromophenol blue) and proteins were separated by SDS-PAGE, followed by transfer to PVDF membrane. The membrane was blocked with TBST+5% dried, nonfat milk at 23° C. for 30 min, incubated with anti-FLAG antibody (diluted 1:1,000 in TBST+5% dried, nonfat milk) at 4° C. for 10 hours, washed three times with TBST, incubated with horseradish-linked anti-mouse antibody (diluted 1:10,000 in TBST+5% dried, nonfat milk) at 23° C. for 1 hour, and washed three times with TBST. Proteins were visualized with chemiluminescent detection. Results from multiple clones ( FIG. 14C ) show that expression of the endo-β-glucanase gene in C. reinhardtii cells resulted in production of the protein.
Similar results were seen ( FIG. 15 ) with a similar construct containing the endoxylanase gene from T. reesei (SEQ ID NO. 31, Table 4). The construct containing the endoxylanase gene is depicted in FIG. 2B . In this instance the segment labeled “Transgene” is the endoxylanase encoding gene (SEQ ID NO. 18, Table 3), the segment labeled 5′ UTR is the 5′ UTR and promoter sequence for the psbD gene from C. reinhardtii , the segment labeled 3′ UTR contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the 3HB locus of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the 3HB locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
FIG. 15A shows PCR using the gene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the endoxylanase gene. FIG. 15B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene. Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis. Western blot analysis demonstrating protein expression is demonstrated in FIG. 15C .
Similar results were seen ( FIG. 16 ) with a similar construct containing the exo-β-glucanase gene from T. viride (SEQ ID NO. 29, Table 4). The construct containing the exo-β-glucanase gene is depicted in FIG. 2B . In this instance the segment labeled “Transgene” is the exo-β-glucanase encoding gene (SEQ ID NO. 15, Table 3), the segment labeled 5′ UTR is the 5′ UTR and promoter sequence for the psbD gene from C. reinhardtii , the segment labeled 3′ UTR contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the 3HB locus of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the 3HB locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
FIG. 16A shows PCR using the gene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the endoxylanase gene. FIG. 16B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene. Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis. Western blot analysis demonstrating protein expression is demonstrated in FIG. 16C .





TABLE 4



Vector Sequences





SEQ ID NO.
Sequence
Use








19
GCACTTTTCGGGGAAATGTGCGCGGAACCCCTATTTGTTTATTTTTCTAAATACATT
Exo-β-glucanase



CAAATATGTATCCGCTCATGAGACAATAACCCTGATAAATGCTTCAATAATATTGA
insertion cassette


AAAAGGAAGAGTATGAGTATTCAACATTTCCGTGTCGCCCTTATTCCCTTTTTTGCG
(D1 KAN-BD01)


GCATTTTGCCTTCCTGTTTTTGCTCACCCAGAAACGCTGGTGAAAGTAAAAGATGCT


GAAGATCAGTTGGGTGCACGAGTGGGTTACATCGAACTGGATCTCAACAGCGGTAA


GATCCTTGAGAGTTTTCGCCCCGAAGAACGTTTTCCAATGATGAGCACTTTTAAAGT


TCTGCTATGTGGCGCGGTATTATCCCGTATTGACGCCGGGCAAGAGCAACTCGGTC


GCCGCATACACTATTCTCAGAATGACTTGGTTGAGTACTCACCAGTCACAGAAAAG


CATCTTACGGATGGCATGACAGTAAGAGAATTATGCAGTGCTGCCATAACCATGAG


TGATAACACTGCGGCCAACTTACTTCTGACAACGATCGGAGGACCGAAGGAGCTAA


CCGCTTTTTTGCACAACATGGGGGATCATGTAACTCGCCTTGATCGTTGGGAACCGG


AGCTGAATGAAGCCATACCAAACGACGAGCGTGACACCACGATGCCTGTAGCAAT


GGCAACAACGTTGCGCAAACTATTAACTGGCGAACTACTTACTCTAGCTTCCCGGC


AACAATTAATAGACTGGATGGAGGCGGATAAAGTTGCAGGACCACTTCTGCGCTCG


GCCCTTCCGGCTGGCTGGTTTATTGCTGATAAATCTGGAGCCGGTGAGCGTGGGTCT


CGCGGTATCATTGCAGCACTGGGGCCAGATGGTAAGCCCTCCCGTATCGTAGTTATC


TACACGACGGGGAGTCAGGCAACTATGGATGAACGAAATAGACAGATCGCTGAGA


TAGGTGCCTCACTGATTAAGCATTGGTAACTGTCAGACCAAGTTTACTCATATATAC


TTTAGATTGATTTAAAACTTCATTTTTAATTTAAAAGGATCTAGGTGAAGATCCTTTT


TGATAATCTCATGACCAAAATCCCTTAACGTGAGTTTTCGTTCCACTGAGCGTCAGA


CCCCGTAGAAAAGATCAAAGGATCTTCTTGAGATCCTTTTTTTCTGCGCGTAATCTG


CTGCTTGCAAACAAAAAAACCACCGCTACCAGCGGTGGTTTGTTTGCCGGATCAAG


AGCTACCAACTCTTTTTCCGAAGGTAACTGGCTTCAGCAGAGCGCAGATACCAAAT


ACTGTCCTTCTAGTGTAGCCGTAGTTAGGCCACCACTTCAAGAACTCTGTAGCACCG


CCTACATACCTCGCTCTGCTAATCCTGTTACCAGTGGCTGCTGCCAGTGGCGATAAG


TCGTGTCTTACCGGGTTGGACTCAAGACGATAGTTACCGGATAAGGCGCAGCGGTC


GGGCTGAACGGGGGGTTCGTGCACACAGCCCAGCTTGGAGCGAACGACCTACACC


GAACTGAGATACCTACAGCGTGAGCTATGAGAAAGCGCCACGCTTCCCGAAGGGA


GAAAGGCGGACAGGTATCCGGTAAGCGGCAGGGTCGGAACAGGAGAGCGCACGAG


GGAGCTTCCAGGGGGAAACGCCTGGTATCTTTATAGTCCTGTCGGGTTTCGCCACCT


CTGACTTGAGCGTCGATTTTTGTGATGCTCGTCAGGGGGGCGGAGCCTATGGAAAA


ACGCCAGCAACGCGGCCTTTTTACGGTTCCTGGCCTTTTGCTGGCCTTTTGCTCACAT


GTTCTTTCCTGCGTTATCCCCTGATTCTGTGGATAACCGTATTACCGCCTTTGAGTGA


GCTGATACCGCTCGCCGCAGCCGAACGACCGAGCGCAGCGAGTCAGTGAGCGAGG


AAGCGGAAGAGCGCCCAATACGCAAACCGCCTCTCCCCGCGCGTTGGCCGATTCAT


TAATGCAGCTGGCACGACAGGTTTCCCGACTGGAAAGCGGGCAGTGAGCGCAACG


CAATTAATGTGAGTTAGCTCACTCATTAGGCACCCCAGGCTTTACACTTTATGCTTC


CGGCTCGTATGTTGTGTGGAATTGTGAGCGGATAACAATTTCACACAGGAAACAGC


TATGACCATGATTACGCCAAGCTCGAAATTAACCCTCACTAAAGGGAACAAAAGCT


GGAGCTCCACCGCGGTGGCGGCCGCTCTAGCACTAGTGGATCGCCCGGGCTGCAGG


AATTCcatatttagataaacgatttcaagcagcagaattagctttattagaacaaacttgtaaagaaatgaatgtaccaatgccgcgcatt


gtagaaaaaccagataattattatcaaattcgacgtatacgtgaattaaaacctgatttaacgattactggaatggcacatgcaaatccattaga


agctcgaggtattacaacaaaatggtcagttgaatttacttttgctcaaattcatggatttactaatacacgtgaaattttagaattagtaacacag


cctcttagacgcaatctaatgtcaaatcaatctgtaaatgctatttcttaatataaatcccaaaagattttttttataatactgagacttcaacactta


cttgtttttattttttgtagttacaattcactcacgttaaagacattggaaaatgaggcaggacgttagtcgatatttatacactcttaagtttacttgc


ccaatatttatattaggacgtccccttcgggtaaataaattttagtggcagtggtaccaccactgcctattttaatactccgaagcatataaatat


acttcggagtatataaatatccactaatatttatattaggcagttggcaggcaacaataaataaatttgtcccgtaaggggacgtcccgaagg


ggaaggggaagaaggcagttgcctcgcctatcggctaacaagttcctttggagtatataaccgcctacaggtaacttaaagaacatttgtta


cccgtaggggtttatacttctaattgcttcttctgaacaataaaatggtttgtgtggtctgggctaggaaacttgtaacaatgtgtagtgtcgcttc


cgcttcccttcgggacgtccccttcgggtaagtaaacttaggagtattaaatcgggacgtccccttcgggtaaataaatttcagtggacgtcc


ccttacgggacgccagtagacgtcagtggcagttgcctcgcctatcggctaacaagttccttcggagtatataaatatagaatgtttacatact


cctaagtttacttgcctccttcggagtatataaatatcccgaaggggaaggaggacgccagtggcagtggtaccgccactgcctgcttcctc


cttcggagtatgtaaaccccttcgggcaactaaagtttatcgcagtatataaatataggcagttggcaggcaactgccactgacgtcctatttt


aatactccgaaggaggcagttggcaggcaactgccactgacgtcccgtaagggtaaggggacgtccactggcgtcccgtaaggggaag


gggacgtaggtacataaatgtgctaggtaactaacgtttgattttttgtggtataatatatgtaccatgcttttaatagaagcttgaatttataaatt


aaaatatttttacaatattttacggagaaattaaaactttaaaaaaattaacatATGGTACCATATCGTAAACTTGCTGT


TATTAGTGCTTTCTTAGCTACTGCTCGTGCACAGTCAGCATGTACCTTACAATCTGA


AACTCATCCTCCATTAACATGGCAAAAATGTTCTTCAGGAGGTACTTGTACACAACA


AACTGGCTCTGTAGTAATTGATGCTAACTGGCGTTGGACACATGCCACTAATAGTTC


AACTAATTGTTATGACGGTAATACTTGGTCATCAACACTTTGTCCCGATAACGAAAC


TTGTGCTAAAAATTGTTGTTTAGATGGTGCAGCTTACGCTTCAACTTACGGCGTTAC


TACATCAGGTAACTCATTATCAATTGGTTTCGTGACTCAATCAGCACAAAAAAATGT


AGGCGCACGTTTATACTTAATGGCAAGTGACACAACCTATCAAGAATTTACATTATT


AGGTAATGAGTTCAGTTTCGACGTAGATGTGAGTCAATTACCATGTGGTTTAAATGG


TGCTCTTTTATTTCGTTTCAATGGACGCTGATGGCGGTGTAAGCAAATATCCTACTAA


TACAGCAGGTGCTAAATACGGAACAGGCTATTGTGATTCTCAGTGTCCTCGTGATTT


AAAGTTTATTAACGGTCAAGCTAACGTGGAAGGTTGGGAACCAAGTAGTAATAATG


CAAATACTGGAATTGGTGGTCACGGATCTTGTTGTTCTGAAATGGATATTTGGGAAG


CTAATTCAATTAGTGAAGCATTAACTCCACATCCTTGTACTACCGTTGGCCAAGAAA


TTTGTGAAGGCGACGGTTGCGGTGGAACATACAGTGATAACCGTTATGGTGGTACA


TGTGATCCTGATGGCTGCGATTGGGACCCATATCGTTTAGGAAATACATCTTTTTAT


GGACCAGGAAGTTCATTCACATTAGATACAACTAAAAAGTTAACAGTTGTTACACA


GTTCGAAACTAGCGGTGCTATTTAATCGTTATTACGTGCAAAATGGTGTAACTTTTCA


ACAACCAAATGCAGAATTAGGTTCTTATTCTGGTAACGGCCTTAATGACGATTATTG


TACAGCAGAAGAAGCAGAATTTGGTGGTAGCAGCTTCTCAGATAAAGGTGGTTTAA


CTCAATTCAAGAAAGCAACATCAGGTGGTATGGTTTTAGTTATGTCATTATGGGATG


ACTATTATGCTAATATGTTATGGTTAGATAGTACATATCCTACAAACGAAACTTCAA


GCACTCCTGGTGCTGTTCGTGGTTCATGTTCAACTTCAAGTGGTGTACCTGCTCAAG


TTGAAAGCCAAAGTCCTAATGCAAAAGTAACTTTTAGTAATATCAAATTTGGTCCA


ATTGGCTCTACAGGCGATCCTTCAGGTGGTAATCCACCAGGTGGAAATCCACCTGG


CACCACTACAACACGTCGTCCTGCTACTACCACAGGTTCTTCTCCTGGACCAACACA


ATCTCATTACGGTCAATGTGGTGGTATTGGTTATTCAGGTCCAACTGTGTGTGCATC


AGGAACTACATGTCAAGTTTTAAATCCATATTATAGCCAATGTTTAGGTACCGGTGA


AAACTTATACTTTCAAGGCTCAGGTGGCGGTGGAAGTGATTACAAAGATGATGATG


ATAAAGGAACCGGTTAATCTAGActtagcttcaactaactctagctcaaacaactaatttttttttaaactaaaataaatct


ggttaaccatacctggtttattttagtttagtttatacacacttttcatatatatatacttaatagctaccataggcagttggcaggacgtccccttac


gggacaaatgtatttattgttgcctgccaactgcctaatataaatattagtggacgtccccttccccttacgggcaagtaaacttagggattttaa


tgctccgttaggaggcaaataaattttagtggcagttgcctcgcctatcggctaacaagttccttcggagtatataaatatcctgccaactgcc


gatatttatatactaggcagtggcggtaccactcgacGGATCCTACGTAATCGATGAATTCGATCCCATTT


TTATAACTGGTCTCAAAATACCTATAAACCCATTGTTCTTCTCTTTTAGCTCTAAGAA


CAATCAATTTATAAATATATTTATTATTATGCTATAATATAAATACTATATAAATAC


ATTTACCTTTTTATAAATACATTTACCTTTTTTTTAATTTGCATGATTTTAATGCTTAT


GCTATCTTTTTTATTTAGTCCATAAAACCTTTAAAGGACCTTTTCTTATGGGATATTT


ATATTTTCCTAACAAAGCAATCGGCGTCATAAACTTTAGTTGCTTACGACGCCTGTG


GACGTCCCCCCCTTCCCCTTACGGGCAAGTAAACTTAGGGATTTTAATGCAATAAAT


AAATTTGTCCTCTTCGGGCAAATGAATTTTAGTATTTAAATATGACAAGGGTGAACC


ATTACTTTTGTTAACAAGTGATCTTACCACTCACTATTTTTGTTGAATTTTAAACTTA


TTTAAAATTCTCGAGAAAGATTTTAAAAATAAACTTTTTTAATCTTTTATTTATTTTT


TCTTTTTTcgtatggaattgcccaatattattcaacaatttatcggaaacagcgttttagagccaaataaaattggtcagtcgccatcgg


atgtttattcttttaatcgaaataatgaaactttttttcttaagcgatctagcactttatatacagagaccacatacagtgtctctcgtgaagcgaaa


atgttgagttggctctctgagaaattaaaggtgcctgaactcatcatgacttttcaggatgagcagtttgaatttatgatcactaaagcgatcaat


gcaaaaccaatttcagcgctttttttaacagaccaagaattgcttgctatctataaggaggcactcaatctgttaaattcaattgctattattgattg


tccatttatttcaaacattgatcatcggttaaaagagtcaaaattttttattgataaccaactccttgacgatatagatcaagatgattttgacactg


aattatggggagaccataaaacttacctaagtctatggaatgagttaaccgagactcgtgttgaagaaagattggttttttctcatggcgatatc


acggatagtaatatttttatagataaattcaatgaaatttattttttagaccttggtcgtgctgggttagcagatgaatttgtagatatatcctttgttg


aacgttgcctaagagaggatgcatcggaggaaactgcgaaaatatttttaaagcatttaaaaaatgatagacctgacaaaaggaattatttttt


aaaacttgatgaattgaattgaTTCCAAGCATTATCTAAAATACTCTGCAGGCACGCTAGCTTGTA


CTCAAGCTCGTAACGAAGGTCGTGACCTTGCTCGTGAAGGTGGCGACGTAATTCGT


TCAGCTTGTAAATGGTCTCCAGAACTTGCTGCTGCATGTGAAGTTTGGAAAGAAATT


AAATTCGAATTTGATACTATTGACAAACTTTAATTTTTATTTTTCATGATGTTTATGT


GAATAGCATAAACATCGTTTTTATTTTTTATGGTGTTTAGGTTAAATACCTAAACAT


CATTTTACATTTTTAAAATTAAGTTCTAAAGTTATCTTTTGTTTAAATTTGCCTGTGC


TTTATAAATTACGATGTGCCAGAAAAATAAAATCTTAGCTTTTTATTATAGAATTTA


TCTTTATGTATTATATTTTATAAGTTATAATAAAAGAAATAGTAACATACTAAAGCG


GATGTAGCGCGTTTATCTTAACGGAAGGAATTCGGCGCCTACGTAGGATCCgtatccatg


ctagcaatatctgatggtacttgcatttcataagtttggcctggaataaccaccgtttcggaagtacctgtcgctttaagttttatagctaaatcta


aagtttctttaagtcttttagctgtattaaatactccacgactttcccttacgggacaataaataaatttgtccccttccccttacgtgacgtcagtg


gcagttgcctgccaactgcctccttcggagtattaaaatcctatatttatatactcctaagtttacttgcccaatatttatattaggcagttggcag


gcaactgccactgacgtcccgaaggggaaggggaaggacgtccccttcgggtaaataaattttagtggcagtggtaccaccactgcctgc


ttcctccttccccttcgggcaagtaaacttagaataaaatttatttgctgcgctagcaggtttacatactcctaagtttacttgcccgaaggggaa


ggaggacgtccccttacgggaatataaatattagtggcagtggtacaataaataaattgtatgtaaaccccttcgggcaactaaagtttatcg


cagtatataaatatagaatgtttacatactccgaaggaggacgccagtggcagtggtaccgccactgcctgtccgcagtattaacatcctattt


taatactccgaaggaggcagttggcaggcaactgccactaatatttatattcccgtaaggggacgtcctaatttaatactccgaaggaggca


gttggcaggcaactgccactaaaatttatttgcctcctaacggagcattaaaatcccgaaggggacgtcccgaaggggaaggggaagga


ggcaactgcctgcttcctccttccccttcgggcaagtaaacttagaataaaatttatttgctgcgctagcaggtttacatactcctaagtttacttg


cccgaaggggaaggaggacgtccccttacgggaatataaatattagtggcagtggtacaataaataaattgtatgtaaaccccttcgggca


actaaagtttatcgcagtatataaatatcggcagttggcaggcaactgccactaaaattcatttgcccgaaggggacgtccactaatatttatat


tcccgtaaggggacgtcccgaaggggaaggggacgtcctaaacggagcattaaaatccctaagtttacttgcctaggcagttggcaggat


atttatatacgatattaatacttttgctactggcacactaaaatttatttgcccgtaaggggacgtccttcggtggttatataaataatcccgtagg


gggagggggatgtcccgtagggggaggggagtggaggctccaacggaggttggagcttctttggtttcctaggcattatttaaatatttttta


accctagcactagaactgagattccagacggcgacccgtaaagttcttcagtcccctcagctttttcacaaccaagttcgggatggattggtg


tgggtccaactgagcaaagagcaccaaggttaactgcatctctgtgagatgctagttaaactaagcttagcttagctcataaacgatagttac


ccgcaaggggttatgtaattatattataaggtcaaaatcaaacggcctttagtatatctcggctaaagccattgctgactgtacacctgatacct


atataacggcttgtctagccgcggccttagagagcactcatcttgagtttagcttcctacttagatgctttcagcagttatctatccatgcgtagc


tacccagcgtttcccattggaatgagaactggtacacaattggcatgtcctttcaggtcctctcgtactatgaaaggctactctcaatgctctaa


cgcctacaccggatatggaccaaactgtctcacgcatgaaattttaaagccgaataaaacttgcggtctttaaaactaacccctttactttcgta


aaggcatggactatgtcttcatcctgctactgttaatggcaggagtcggcgtattatactttcccactCTCGAGGGGGGGCCCG


GTACCCAATTCGCCCTATAGTGAGTCGTATTACAATTCACTGGCCGTCGTTTTACAA


CGTCGTGACTGGGAAAACCCTGGCGTTACCCAACTTAATCGCCTTGCAGCACATCC


CCCTTTCGCCAGCTGGCGTAATAGCGAAGAGGCCCGCACCGATCGCCCTTCCCAAC


AGTTGCGCAGCCTGAATGGCGAATGGGACGCGCCCTGTAGCGGCGCATTAAGCGCG


GCGGGTGTGGTGGTTACGCGCAGCGTGACCGCTACACTTGCCAGCGCCCTAGCGCC


CGCTCCTTTCGCTTTCTTCCCTTCCTTTCTCGCCACGTTCGCCGGCTTTCCCCGTCAA


GCTCTAAATCGGGGGCTCCCTTTAGGGTTCCGATTTAGTGCTTTACGGCACCTCGAC


CCCAAAAAACTTGATTAGGGTGATGGTTCACGTAGTGGGCCATCGCCCTGATAGAC


GGTTTTTCGCCCTTTGACGTTGGAGTCCACGTTCTTTAATAGTGGACTCTTGTTCCAA


ACTGGAACAACACTCAACCCTATCTCGGTCTATTCTTTTGATTTATAAGGGATTTTG


CCGATTTCGGCCTATTGGTTAAAAAATGAGCTGATTTAACAAAAATTTAACGCGAA


TTTTAACAAAATATTAACGCTTACAATTTAGGTG



20
GCACTTTTCGGGGAAATGTGCGCGGAACCCCTATTTGTTTATTTTTCTAAATACATT
Endo-β-glucanase


CAAATATGTATCCGCTCATGAGACAATAACCCTGATAAATGCTTCAATAATATTGA
insertion cassette


AAAAGGAAGAGTATGAGTATTCAACATTTCCGTGTCGCCCTTATTCCCTTTTTTGCG
(D1 KAN-BD05)


GCATTTTGCCTTCCTGTTTTTGCTCACCCAGAAACGCTGGTGAAAGTAAAAGATGCT


GAAGATCAGTTGGGTGCACGAGTGGGTTACATCGAACTGGATCTCAACAGCGGTAA


GATCCTTGAGAGTTTTCGCCCCGAAGAACGTTTTCCAATGATGAGCACTTTTAAAGT


TCTGCTATGTGGCGCGGTATTATCCCGTATTGACGCCGGGCAAGAGCAACTCGGTC


GCCGCATACACTATTCTCAGAATGACTTGGTTGAGTACTCACCAGTCACAGAAAAG


CATCTTACGGATGGCATGACAGTAAGAGAATTATGCAGTGCTGCCATAACCATGAG


TGATAACACTGCGGCCAACTTACTTCTGACAACGATCGGAGGACCGAAGGAGCTAA


CCGCTTTTTTGCACAACATGGGGGATCATGTAACTCGCCTTGATCGTTGGGAACCGG


AGCTGAATGAAGCCATACCAAACGACGAGCGTGACACCACGATGCCTGTAGCAAT


GGCAACAACGTTGCGCAAACTATTAACTGGCGAACTACTTACTCTAGCTTCCCGGC


AACAATTAATAGACTGGATGGAGGCGGATAAAGTTGCAGGACCACTTCTGCGCTCG


GCCCTTCCGGCTGGCTGGTTTATTGCTGATAAATCTGGAGCCGGTGAGCGTGGGTCT


CGCGGTATCATTGCAGCACTGGGGCCAGATGGTAAGCCCTCCCGTATCGTAGTTATC


TACACGACGGGGAGTCAGGCAACTATGGATGAACGAAATAGACAGATCGCTGAGA


TAGGTGCCTCACTGATTAAGCATTGGTAACTGTCAGACCAAGTTTACTCATATATAC


TTTAGATTGATTTAAAACTTCATTTTTAATTTAAAAGGATCTAGGTGAAGATCCTTTT


TGATAATCTCATGACCAAAATCCCTTAACGTGAGTTTTCGTTCCACTGAGCGTCAGA


CCCCGTAGAAAAGATCAAAGGATCTTCTTGAGATCCTTTTTTTCTGCGCGTAATCTG


CTGCTTGCAAACAAAAAAACCACCGCTACCAGCGGTGGTTTGTTTGCCGGATCAAG


AGCTACCAACTCTTTTTCCGAAGGTAACTGGCTTCAGCAGAGCGCAGATACCAAAT


ACTGTCCTTCTAGTGTAGCCGTAGTTAGGCCACCACTTCAAGAACTCTGTAGCACCG


CCTACATACCTCGCTCTGCTAATCCTGTTACCAGTGGCTGCTGCCAGTGGCGATAAG


TCGTGTCTTACCGGGTTGGACTCAAGACGATAGTTACCGGATAAGGCGCAGCGGTC


GGGCTGAACGGGGGGTTCGTGCACACAGCCCAGCTTGGAGCGAACGACCTACACC


GAACTGAGATACCTACAGCGTGAGCTATGAGAAAGCGCCACGCTTCCCGAAGGGA


GAAAGGCGGACAGGTATCCGGTAAGCGGCAGGGTCGGAACAGGAGAGCGCACGAG


GGAGCTTCCAGGGGGAAACGCCTGGTATCTTTATAGTCCTGTCGGGTTTCGCCACCT


CTGACTTGAGCGTCGATTTTTGTGATGCTCGTCAGGGGGGCGGAGCCTATGGAAAA


ACGCCAGCAACGCGGCCTTTTTACGGTTCCTGGCCTTTTGCTGGCCTTTTGCTCACAT


GTTCTTTCCTGCGTTATCCCCTGATTCTGTGGATAACCGTATTACCGCCTTTGAGTGA


GCTGATACCGCTCGCCGCAGCCGAACGACCGAGCGCAGCGAGTCAGTGAGCGAGG


AAGCGGAAGAGCGCCCAATACGCAAACCGCCTCTCCCCGCGCGTTGGCCGATTCAT


TAATGCAGCTGGCACGACAGGTTTCCCGACTGGAAAGCGGGCAGTGAGCGCAACG


CAATTAATGTGAGTTAGCTCACTCATTAGGCACCCCAGGCTTTACACTTTATGCTTC


CGGCTCGTATGTTGTGTGGAATTGTGAGCGGATAACAATTTCACACAGGAAACAGC


TATGACCATGATTACGCCAAGCTCGAAATTAACCCTCACTAAAGGGAACAAAAGCT


GGAGCTCCACCGCGGTGGCGGCCGCTCTAGCACTAGTGGATCGCCCGGGCTGCAGG


AATTCcatatttagataaacgatttcaagcagcagaattagctttattagaacaaacttgtaaagaaatgaatgtaccaatgccgcgcatt


gtagaaaaaccagataattattatcaaattcgacgtatacgtgaattaaaacctgatttaacgattactggaatggcacatgcaaatccattaga


agctcgaggtattacaacaaaatggtcagttgaatttacttttgctcaaattcatggatttactaatacacgtgaaattttagaattagtaacacag


cctcttagacgcaatctaatgtcaaatcaatctgtaaatgctatttcttaatataaatcccaaaagattttttttataatactgagacttcaacactta


cttgtttttattttttgtagttacaattcactcacgttaaagacattggaaaatgaggcaggacgttagtcgatatttatacactcttaagtttacttgc


ccaatatttatattaggacgtccccttcgggtaaataaattttagtggcagtggtaccaccactgcctattttaatactccgaagcatataaatat


acttcggagtatataaatatccactaatatttatattaggcagttggcaggcaacaataaataaatttgtcccgtaaggggacgtcccgaagg


ggaaggggaagaaggcagttgcctcgcctatcggctaacaagttcctttggagtatataaccgcctacaggtaacttaaagaacatttgtta


cccgtaggggtttatacttctaattgcttcttctgaacaataaaatggtttgtgtggtctgggctaggaaacttgtaacaatgtgtagtgtcgcttc


cgcttcccttcgggacgtccccttcgggtaagtaaacttaggagtattaaatcgggacgtccccttcgggtaaataaatttcagtggacgtcc


ccttacgggacgccagtagacgtcagtggcagttgcctcgcctatcggctaacaagttccttcggagtatataaatatagaatgtttacatact


cctaagtttacttgcctccttcggagtatataaatatcccgaaggggaaggaggacgccagtggcagtggtaccgccactgcctgcttcctc


cttcggagtatgtaaaccccttcgggcaactaaagtttatcgcagtatataaatataggcagttggcaggcaactgccactgacgtcctatttt


aatactccgaaggaggcagttggcaggcaactgccactgacgtcccgtaagggtaaggggacgtccactggcgtcccgtaaggggaag


gggacgtaggtacataaatgtgctaggtaactaacgtttgattttttgtggtataatatatgtaccatgcttttaatagaagcttgaatttataaatt


aaaatatttttacaatattttacggagaaattaaaactttaaaaaaattaacatATGGTACCAAACAAAAGCGTAGCAC


CATTATTACTTGCTGCATCTATCTTATATGGTGGTGCTGTTGCTCAACAGACTGTTTG


GGGTCAGTGTGGTGGTATTGGTTGGTCTGGTCCTACCAATTGTGCTCCTGGCTCAGC


ATGTAGTACCTTAAATCCTTACTATGCTCAATGTATTCCAGGTGCAACAACTATAAC


AACATCAACTCGCCCTCCTTCAGGTCCAACTACAACAACTCGTGCTACTAGCACTTC


TAGCAGCACACCTCCTACATCTTCTGGAGTACGTTTCGCTGGTGTTAATATTGCAGG


TTTCGATTTTGGTTGTACTACCGATGGTACATGTGTTACCAGTAAAGTTTATCCCCCT


TTAAAAAATTTTACTGGCTCAAACAATTATCCAGATGGCATTGGTCAAATGCAACA


CTTTGTAAATGAAGATGGTATGACTATTTTCCGTTTACCAGTGGGCTGGCAATACTT


AGTTAACAACAATTTAGGTGGTAACTTAGATAGTACATCAATTAGTAAATATGATC


AATTAGTACAAGGTTGCTTATCTTTAGGTGCCTATTGTATTGTTGATATTCATAATTA


TGCCCGTTGGAACGGTGGTATTATTGGTCAAGGTGGTCCAACTAATGCTCAATTTAC


ATCATTATGGAGCCAATTAGCTTCAAAATATGCTAGTCAATCACGTGTTTGGTTCGG


TATTATGAATGAACCTCACGATGTGAACATAAATACTTGGGCTGCAACTGTGCAAG


AAGTAGTAACTGCTATTCGTAATGCTGGTGCAACATCACAATTCATTAGTTTACCAG


GCAACGATTGGCAATCTGCCGGCGCTTTTATTTCTGACGGTAGCGCAGCTGCTCTTA


GTCAAGTGACTAACCCAGACGGTAGTACCACTAACTTAATATTCGATGTACATAAA


TATCTTGATTCTGATAATAGCGGAACACACGCCGAATGTACCACAAATAATATTGA


TGGTGCTTTTAGTCCTTTAGCAACTTGGTTACGTCAAAATAATCGCCAAGCCATTTT


AACTGAAACAGGTGGTGGAAACGTGCAGAGTTGTATCCAAGACATGTGTCAACAAA


TTCAGTACTTAAATCAAAACTCTGACGTGTACTTAGGTTATGTAGGTTGGGGTGCTG


GTTCTTTTGATTCAACTTATGTATTAACCGAAACCCCTACTTCTTCTGGAAACTCATG


GACAGACACTTCATTAGTAAGTAGTTGTTTAGCTCGCAAGGGTACCGGTGAAAACT


TATACTTTCAAGGCTCAGGTGGCGGTGGAAGTGATTACAAAGATGATGATGATAAA


GGAACCGGTTAATCTAGActtagcttcaactaactctagctcaaacaactaatttttttttaaactaaaataaatctggttaacc


atacctggtttattttagtttagtttatacacacttttcatatatatatacttaatagctaccataggcagttggcaggacgtccccttacgggacaa


atgtatttattgttgcctgccaactgcctaatataaatattagtggacgtccccttccccttacgggcaagtaaacttagggattttaatgctccgt


taggaggcaaataaattttagtggcagttgcctcgcctatcggctaacaagttccttcggagtatataaatatcctgccaactgccgatatttat


atactaggcagtggcggtaccactcgacGGATCCTACGTAATCGATGAATTCGATCCCATTTTTATA


ACTGGTCTCAAAATACCTATAAACCCATTGTTCTTCTCTTTTAGCTCTAAGAACAAT


CAATTTATAAATATATTTATTATTATGCTATAATATAAATACTATATAAATACATTT


ACCTTTTTATAAATACATTTACCTTTTTTTTAATTTGCATGATTTTAATGCTTATGCTA


TCTTTTTTATTTAGTCCATAAAACCTTTAAAGGACCTTTTCTTATGGGATATTTATAT


TTTCCTAACAAAGCAATCGGCGTCATAAACTTTAGTTGCTTACGACGCCTGTGGACG


TCCCCCCCTTCCCCTTACGGGCAAGTAAACTTAGGGATTTTAATGCAATAAATAAAT


TTGTCCTCTTCGGGCAAATGAATTTTAGTATTTAAATATGACAAGGGTGAACCATTA


CTTTTGTTAACAAGTGATCTTACCACTCACTATTTTTGTTGAATTTTAAACTTATTTA


AAATTCTCGAGAAAGATTTTAAAAATAAACTTTTTTAATCTTTTATTTATTTTTTCTT


TTTTcgtatggaattgcccaatattattcaacaatttatcggaaacagcgttttagagccaaataaaattggtcagtcgccatcggatgtttat


tcttttaatcgaaataatgaaactttttttcttaagcgatctagcactttatatacagagaccacatacagtgtctctcgtgaagcgaaaatgttga


gttggctctctgagaaattaaaggtgcctgaactcatcatgacttttcaggatgagcagtttgaatttatgatcactaaagcgatcaatgcaaaa


ccaatttcagcgctttttttaacagaccaagaattgcttgctatctataaggaggcactcaatctgttaaattcaattgctattattgattgtccattt


atttcaaacattgatcatcggttaaaagagtcaaaattttttattgataaccaactccttgacgatatagatcaagatgattttgacactgaattatg


gggagaccataaaacttacctaagtctatggaatgagttaaccgagactcgtgttgaagaaagattggttttttctcatggcgatatcacggat


agtaatatttttatagataaattcaatgaaatttattttttagaccttggtcgtgctgggttagcagatgaatttgtagatatatcctttgttgaacgtt


gcctaagagaggatgcatcggaggaaactgcgaaaatatttttaaagcatttaaaaaatgatagacctgacaaaaggaattattttttaaaact


tgatgaattgaattgaTTCCAAGCATTATCTAAAATACTCTGCAGGCACGCTAGCTTGTACTCA


AGCTCGTAACGAAGGTCGTGACCTTGCTCGTGAAGGTGGCGACGTAATTCGTTCAG


CTTGTAAATGGTCTCCAGAACTTGCTGCTGCATGTGAAGTTTGGAAAGAAATTAAAT


TCGAATTTGATACTATTGACAAACTTTAATTTTTATTTTTCATGATGTTTATGTGAAT


AGCATAAACATCGTTTTTATTTTTTATGGTGTTTAGGTTAAATACCTAAACATCATTT


TACATTTTTAAAATTAAGTTCTAAAGTTATCTTTTGTTTAAATTTGCCTGTGCTTTAT


AAATTACGATGTGCCAGAAAAATAAAATCTTAGCTTTTTATTATAGAATTTATCTTT


ATGTATTATATTTTATAAGTTATAATAAAAGAAATAGTAACATACTAAAGCGGATG


TAGCGCGTTTATCTTAACGGAAGGAATTCGGCGCCTACGTAGGATCCgtatccatgctagcaa


tatctgatggtacttgcatttcataagtttggcctggaataaccaccgtttcggaagtacctgtcgctttaagttttatagctaaatctaaagtttctt


taagtcttttagctgtattaaatactccacgactttcccttacgggacaataaataaatttgtccccttccccttacgtgacgtcagtggcagttgc


ctgccaactgcctccttcggagtattaaaatcctatatttatatactcctaagtttacttgcccaatatttatattaggcagttggcaggcaactgc


cactgacgtcccgaaggggaaggggaaggacgtccccttcgggtaaataaattttagtggcagtggtaccaccactgcctgcttcctcctt


ccccttcgggcaagtaaacttagaataaaatttatttgctgcgctagcaggtttacatactcctaagtttacttgcccgaaggggaaggagga


cgtccccttacgggaatataaatattagtggcagtggtacaataaataaattgtatgtaaaccccttcgggcaactaaagtttatcgcagtatat


aaatatagaatgtttacatactccgaaggaggacgccagtggcagtggtaccgccactgcctgtccgcagtattaacatcctattttaatactc


cgaaggaggcagttggcaggcaactgccactaatatttatattcccgtaaggggacgtcctaatttaatactccgaaggaggcagttggca


ggcaactgccactaaaatttatttgcctcctaacggagcattaaaatcccgaaggggacgtcccgaaggggaaggggaaggaggcaact


gcctgcttcctccttccccttcgggcaagtaaacttagaataaaatttatttgctgcgctagcaggtttacatactcctaagtttacttgcccgaa


ggggaaggaggacgtccccttacgggaatataaatattagtggcagtggtacaataaataaattgtatgtaaaccccttcgggcaactaaag


tttatcgcagtatataaatatcggcagttggcaggcaactgccactaaaattcatttgcccgaaggggacgtccactaatatttatattcccgta


aggggacgtcccgaaggggaaggggacgtcctaaacggagcattaaaatccctaagtttacttgcctaggcagttggcaggatatttatat


acgatattaatacttttgctactggcacactaaaatttatttgcccgtaaggggacgtccttcggtggttatataaataatcccgtagggggagg


gggatgtcccgtagggggaggggagtggaggctccaacggaggttggagcttctttggtttcctaggcattatttaaatattttttaaccctag


cactagaactgagattccagacggcgacccgtaaagttcttcagtcccctcagctttttcacaaccaagttcgggatggattggtgtgggtcc


aactgagcaaagagcaccaaggttaactgcatctctgtgagatgctagttaaactaagcttagcttagctcataaacgatagttacccgcaag


gggttatgtaattatattataaggtcaaaatcaaacggcctttagtatatctcggctaaagccattgctgactgtacacctgatacctatataacg


gcttgtctagccgcggccttagagagcactcatcttgagtttagcttcctacttagatgctttcagcagttatctatccatgcgtagctacccag


cgtttcccattggaatgagaactggtacacaattggcatgtcctttcaggtcctctcgtactatgaaaggctactctcaatgctctaacgcctac


accggatatggaccaaactgtctcacgcatgaaattttaaagccgaataaaacttgcggtctttaaaactaacccctttactttcgtaaaggcat


ggactatgtcttcatcctgctactgttaatggcaggagtcggcgtattatactttcccactCTCGAGGGGGGGCCCGGTAC


CCAATTCGCCCTATAGTGAGTCGTATTACAATTCACTGGCCGTCGTTTTACAACGTC


GTGACTGGGAAAACCCTGGCGTTACCCAACTTAATCGCCTTGCAGCACATCCCCCTT


TCGCCAGCTGGCGTAATAGCGAAGAGGCCCGCACCGATCGCCCTTCCCAACAGTTG


CGCAGGCTGAATGGCGAATGGGACGCGCCCTGTAGCGGCGCATTAAGCGCGGCGG


GTGTGGTGGTTACGCGCAGCGTGACCGCTACACTTGCCAGCGCCCTAGCGCCCGCT


CCTTTCGCTTTCTTCCCTTCCTTTCTCGCCACGTTCGCCGGCTTTCCCCGTCAAGCTC


TAAATCGGGGGCTCCCTTTAGGGTTCCGATTTAGTGCTTTACGGCACCTCGACCCCA


AAAAACTTGATTAGGGTGATGGTTCACGTAGTGGGCCATCGCCCTGATAGACGGTT


TTTCGCCCTTTGACGTTGGAGTCCACGTTCTTTAATAGTGGACTCTTGTTCCAAACTG


GAACAACACTCAACCCTATCTCGGTCTATTCTTTTGATTTATAAGGGATTTTGCCGA


TTTCGGCCTATTGGTTAAAAAATGAGCTGATTTAACAAAAATTTAACGCGAATTTTA


ACAAAATATTAACGCTTACAATTTAGGTG



21
GCACTTTTCGGGGAAATGTGCGCGGAACCCCTATTTGTTTATTTTTCTAAATACATT
β-glucosidase


CAAATATGTATCCGCTCATGAGACAATAACCCTGATAAATGCTTCAATAATATTGA
insertion cassette


AAAAGGAAGAGTATGAGTATTCAACATTTCCGTGTCGCCCTTATTCCCTTTTTTGCG
(D1 KAN-BD09)


GCATTTTGCCTTCCTGTTTTTGCTCACCCAGAAACGCTGGTGAAAGTAAAAGATGCT


GAAGATCAGTTGGGTGCACGAGTGGGTTACATCGAACTGGATCTCAACAGCGGTAA



GATCCTTGAGAGTTTTCGCCCCGAAGAACGTTTTCCAATGATGAGCACTTTTAAAGT


TCTGCTATGTGGCGCGGTATTATCCCGTATTGACGCCGGGCAAGAGCAACTCGGTC


GCCGCATACACTATTCTCAGAATGACTTGGTTGAGTACTCACCAGTCACAGAAAAG


CATCTTACGGATGGCATGACAGTAAGAGAATTATGCAGTGCTGCCATAACCATGAG


TGATAACACTGCGGCCAACTTACTTCTGACAACGATCGGAGGACCGAAGGAGCTAA


CCGCTTTTTTGCACAACATGGGGGATCATGTAACTCGCCTTGATCGTTGGGAACCGG


AGCTGAATGAAGCCATACCAAACGACGAGCGTGACACCACGATGCCTGTAGCAAT


GGCAACAACGTTGCGCAAACTATTAACTGGCGAACTACTTACTCTAGCTTCCCGGC


AACAATTAATAGACTGGATGGAGGCGGATAAAGTTGCAGGACCACTTCTGCGCTCG


GCCCTTCCGGCTGGCTGGTTTATTGCTGATAAATCTGGAGCCGGTGAGCGTGGGTCT


CGCGGTATCATTGCAGCACTGGGGCCAGATGGTAAGCCCTCCCGTATCGTAGTTATC


TACACGACGGGGAGTCAGGCAACTATGGATGAACGAAATAGACAGATCGCTGAGA


TAGGTGCCTCACTGATTAAGCATTGGTAACTGTCAGACCAAGTTTACTCATATATAC


TTTAGATTGATTTAAAACTTCATTTTTAATTTAAAAGGATCTAGGTGAAGATCCTTTT


TGATAATCTCATGACCAAAATCCCTTAACGTGAGTTTTCGTTCCACTGAGCGTCAGA


CCCCGTAGAAAAGATCAAAGGATCTTCTTGAGATCCTTTTTTTCTGCGCGTAATCTG


CTGCTTGCAAACAAAAAAACCACCGCTACCAGCGGTGGTTTGTTTGCCGGATCAAG


AGCTACCAACTCTTTTTCCGAAGGTAACTGGCTTCAGCAGAGCGCAGATACCAAAT


ACTGTCCTTCTAGTGTAGCCGTAGTTAGGCCACCACTTCAAGAACTCTGTAGCACCG


CCTACATACCTCGCTCTGCTAATCCTGTTCAGTGGCTGCTGCCAGTGGCGATAAG


TCGTGTCTTACCGGGTTGGACTCAAGACGATAGTTACCGGATAAGGCGCAGCGGTC


GGGCTGAACGGGGGGTTCGTGCACACAGCCCAGCTTGGAGCGAACGACCTACACC


GAACTGAGATACCTACAGCGTGAGCTATGAGAAAGCGCCACGCTTCCCGAAGGGA


GAAAGGCGGACAGGTATCCGGTAAGCGGCAGGGTCGGAACAGGAGAGCGCACGAG


GGAGCTTCCAGGGGGAAACGCCTGGTATCTTTATAGTCCTGTCGGGTTTCGCCACCT


CTGACTTGAGCGTCGATTTTTGTGATGCTCGTCAGGGGGGCGGAGCCTATGGAAAA


ACGCCAGCAACGCGGCCTTTTTACGGTTCCTGGCCTTTTGCTGGCCTTTTGCTCACAT


GTTCTTTCCTGCGTTATCCCCTGATTCTGTGGATAACCGTATTACCGCCTTTGAGTGA


GCTGATACCGCTCGCCGCAGCCGAACGACCGAGCGCAGCGAGTCAGTGAGCGAGG


AAGCGGAAGAGCGCCCAATACGCAAACCGCCTCTCCCCGCGCGTTGGCCGATTCAT


TAATGCAGCTGGCACGACAGGTTTCCCGACTGGAAAGCGGGCAGTGAGCGCAACG


CAATTAATGTGAGTTAGCTCACTCATTAGGCACCCCAGGCTTTACACTTTATGCTTC


CGGCTCGTATGTTGTGTGGAATTGTGAGCGGATAACAATTTCACACAGGAAACAGC


TATGACCATGATTACGCCAAGCTCGAAATTAACCCTCACTAAAGGGAACAAAAGCT


GGAGCTCCACCGCGGTGGCGGCCGCTCTAGCACTAGTGGATCGCCCGGGCTGCAGG


AATTCcatatttagataaacgatttcaagcagcagaattagctttattagaacaaacttgtaaagaaatgaatgtaccaatgccgcgcatt


gtagaaaaaccagataattattatcaaattcgacgtatacgtgaattaaaacctgatttaacgattactggaatggcacatgcaaatccattaga


agctcgaggtattacaacaaaatggtcagttgaatttacttttgctcaaattcatggatttactaatacacgtgaaattttagaattagtaacacag


cctcttagacgcaatctaatgtcaaatcaatctgtaaatgctatttcttaatataaatcccaaaagattttttttataatactgagacttcaacactta


cttgtttttattttttgtagttacaattcactcagttaaagacattggaaaatgaggcaggacgttagtcgatatttatacactcttaagtttacttgc


ccaatatttatattaggacgtccccttcgggtaaataaattttagtggcagtggtaccaccactgcctattttaatactccgaagcatataaatat


acttcggagtatataaatatccactaatatttatattaggcagttggcaggcaacaataaataaatttgtcccgtaaggggacgtcccgaagg


ggaaggggaagaaggcagttgcctcgcctatcggctaacaagttcctttggagtatataaccgcctacaggtaacttaaagaacatttgtta


cccgtaggggtttatacttctaattgcttcttctgaacaataaaatggtttgtgtggtctgggctaggaaacttgtaacaatgtgtagtgtcgcttc


cgcttcccttcgggacgtccccttcgggtaagtaaacttaggagtattaaatcgggacgtccccttcgggtaaataaatttcagtggacgtcc


ccttacgggacgccagtagacgtcagtggcagttgcctcgcctatcggctaacaagttccttcggagtatataaatatagaatgtttacatact


cctaagtttacttgcctccttcggagtatataaatatcccgaaggggaaggaggacgccagtggcagtggtaccgccactgcctgcttcctc


cttcggagtatgtaaaccccttcgggcaactaaagtttatcgcagtatataaatataggcagttggcaggcaactgccactgacgtcctatttt


aatactccgaaggaggcagttggcaggcaactgccactgacgtcccgtaagggtaaggggacgtccactggcgtcccgtaaggggaag


gggacgtaggtacataaatgtgctaggtaactaacgtttgattttttgtggtataatatatgtaccatgcttttaatagaagcttgaatttataaatt


aaaatatttttacaatattttacggagaaattaaaactttaaaaaaattaacatATGGTACCATTACCAAAGGATTTCCA


ATGGGGTTTCGCTACCGCAGCTTATCAAATTGAAGGTGCAGTTGATCAAGATGGAC


GTGGACCTTCTATTTGGGACACATTCTGTGCACAACCAGGTAAAATTGCTGATGGTT


CATCAGGTGTAACAGCATGTGACTCATATAATCGTACAGCTGAAGACATTGCACTTT


TAAAATCTTTAGGTGCTAAATCATATCGTTTCTCTATCTCATGGTCAAGAATTATTCC


TGAAGGTGGCCGTGGTGACGCAGTAAATCAAGCTGGTATTGATCACTATGTTAAAT


TTGTAGATGACTTATTAGACGCAGGTATTACACCTTTTATCACTTTATTTCACTGGG


ATTTACCTGAAGGTTTACACCAACGTTATGGTGGTCTTTTAAACCGTACAGAATTTC


CTTTAGATTTCGAAAACTATGCAAGAGTTATGTTTCGTGCACTTCCCAAAGTAAGAA


ACTGGATTACTTTTAATGAACCTTTATGTTCTGCTATTCCTGGTTATGGTTCAGGCAC


CTTTGCCCCAGGCAGACAAAGTACAAGTGAGCCCTGGACAGTGGGCCATAACATTT


TAGTAGCTCACGGTAGAGCTGTAAAAGCATATAGAGATGATTTCAAACCTGCTTCA


GGTGATGGTCAAATAGGTATTGTGTTAAATGGTGACTTCACATATCCCTGGGATGCC


GCTGATCCTGCAGATAAAGAAGCCGCTGAACGTCGCTTAGAATTTTTCACTGCTTGG


TTTGCTGACCCCATCTATCTTGGTGATTATCCTGCTTCAATGCGTAAACAATTAGGT


GATCGTTTACCTACTTTTACACCAGAAGAACGTGCTTTAGTTCATGGTAGTAATGAC


TTTTATGGTATGAACCACTATACTTCAAACTATATTCGTCACCGTAGCTCACCCGCA


AGTGCTGATGACACAGTAGGTAATGTAGATGTTTTTATTTACTAATAAACAAGGTAA


TTGTATCGGTCCTGAAACACAGAGCCCCTGGCTTCGTCCTTGTGCAGCTGGTTTCCG


TGACTTCCTTGTATGGATAAGCAAACGTTATGGTTATCCACCAATTTATGTTACAGA


AAACGGAACATCAATAAAAGGTGAAAGTGACTTACCAAAGGAAAAGATTCTTGAA


GATGATTTTCGTGTTAAGTATTATAACGAATACATTAGAGCTATGGTTACAGCCGTT


GAATTAGATGGTGTAAATGTAAAAGGTTATTTCGCATGGTCTTTAATGGATAACTTT


GAATGGGCTGATGGTTACGTTACACGTTTTGGTGTAACCTACGTTGATTACGAAAAC


GGCCAAAAACGTTTCCCTAAAAAGAGTGCTAAAAGTTTAAAACCTTTATTTGATGA


ATTAATAGCTGCTGCAGGTACCGGTGAAAACTTATACTTTCAAGGCTCAGGTGGCG


GTGGAAGTGATTACAAAGATGATGATGATAAAGGAACCGGTTAATCTAGActtagcttca


actaactctagctcaaacaactaatttttttttaaactaaaataaatctggttaaccatacctggtttattttagttagtttatacacacttttcatatat


atatacttaatagctaccataggcagttggcaggacgtccccttacgggacaaatgtatttattgttgcctgccaactgcctaatataaatatta


gtggacgtccccttccccttacgggcaagtaaacttagggattttaatgctccgttaggaggcaaataaattttagtggcagttgcctcgccta


tcggctaacaagttccttcggagtatataaatatcctgccaactgccgatatttatatactaggcagtggcggtaccactcgacGGATCC


TACGTAATCGATGAATTCGATCCCATTTTTATAACTGGTCTCAAAATACCTATAAAC


CCATTGTTCTTCTCTTTTAGCTCTAAGAACAATCAATTTATAAATATATTTATTATTA


TGCTATAATATAAATACTATATAAATACATTTACCTTTTTATAAATACATTTACCTTT


TTTTTAATTTGCATGATTTTAATGCTTATGCTATCTTTTTTATTTAGTCCATAAAACCT


TTAAAGGACCTTTTCTTATGGGATATTTATATTTTCCTAACAAAGCAATCGGCGTCA


TAAACTTTAGTTGCTTACGACGCCTGTGGACGTCCCCCCCTTCCCCTTACGGGCAAG


TAAACTTAGGGATTTTAATGCAATAAATAAATTTGTCCTCTTCGGGCAAATGAATTT


TAGTATTTAAATATGACAAGGGTGAACCATTACTTTTGTTAACAAGTGATCTTACCA


CTCACTATTTTTGTTGAATTTTAAACTTATTTAAAATTCTCGAGAAAGATTTTAAAA


ATAAACTTTTTTAATCTTTTATTTATTTTTTCTTTTTTcgtatggaattgcccaatattattcaacaatttatc


ggaaacagcgttttagagccaaataaaattggtcagtcgccatcggatgtttattcttttaatcgaaataatgaaactttttttcttaagcgatcta


gcactttatatacagagaccacatacagtgtctctcgtgaagcgaaaatgttgagttggctctctgagaaattaaaggtgcctgaactcatcat


gacttttcaggatgagcagtttgaatttatgatcactaaagcgatcaatgcaaaaccaatttcagcgctttttttaacagaccaagaattgcttgc


tatctataaggaggcactcaatctgttaaattcaattgctattattgattgtccatttatttcaaacattgatcatcggttaaaagagtcaaaatttttt


attgataaccaactccttgacgatatagatcaagatgattttgacactgaattatggggagaccataaaacttacctaagtctatggaatgagtt


aaccgagactcgtgttgaagaaagattggttttttctcatggcgatatcacggatagtaatatttttatagataaattcaatgaaatttattttttaga


ccttggtcgtgctgggttagcagatgaatttgtagatatatcctttgttgaacgttgcctaagagaggatgcatcggaggaaactgcgaaaat


atttttaaagcatttaaaaaatgatagacctgacaaaaggaattattttttaaaacttgatgaattgaattgaTTCCAAGCATTATCT


AAAATACTCTGCAGGCACGCTAGCTTGTACTCAAGCTCGTAACGAAGGTCGTGACC


TTGCTCGTGAAGGTGGCGACGTAATTCGTTCAGCTTGTAAATGGTCTCCAGAACTTG


CTGCTGCATGTGAAGTTTGGAAAGAAATTAAATTCGAATTTGATACTATTGACAAA


CTTTAATTTTTATTTTTCATGATGTTTATGTGAATAGCATAAACATCGTTTTTATTTTT


TATGGTGTTTAGGTTAAATACCTAAACATCATTTTACATTTTTAAAATTAAGTTCTA


AAGTTATCTTTTGTTTAAATTTGCCTGTGCTTTATAAATTACGATGTGCCAGAAAAA


TAAAATCTTAGCTTTTTATTATAGAATTTATCTTTATGTATTATATTTTATAAGTTAT


AATAAAAGAAATAGTAACATACTAAAGCGGATGTAGCGCGTTTATCTTAACGGAAG


GAATTCGGCGCCTACGTAGGATCCgtatccatgctagcaatatctgatggtacttgcatttcataagtttggcctggaat


aaccaccgtttcggaagtacctgtcgcgtttaagttttatagctaaatctaaagtttctttaagtcttttagctgtattaaatactccacgactttccct


acgggacaataaataaatttgtccccttccccttacgtgacgtcagtggcagttgcctgccaactgcctccttcggagtattaaaatcctatatt


tatatactcctaagtttacttgcccaatatttatattaggcagttggcaggcaactgccactgacgtcccgaaggggaaggggaaggacgtc


cccttcgggtaaataaattttagtggcagtggtaccaccactgcctgcttcctccttccccttcgggcaagtaaacttagaataaaatttatttgc


tgcgctagcaggtttacatactcctaagtttacttgcccgaaggggaaggaggacgtccccttacgggaatataaatattagtggcagtggt


acaataaataaattgtatgtaaaccccttcgggcaactaaagtttatcgcagtatataaatatagaatgtttacatactccgaaggaggacgcc


agtggcagtggtaccgccactgcctgtccgcagtattaacatcctattttaatactccgaaggaggcagttggcaggcaactgccactaatat


ttatattcccgtaaggggacgtcctaatttaatactccgaaggaggcagttggcaggcaactgccactaaaatttatttgcctcctaacggag


cattaaaatcccgaaggggacgtcccgaaggggaaggggaaggaggcaactgcctgcttcctccttccccttcgggcaagtaaacttag


aataaaatttatttgctgcgctagcaggtttacatactcctaagtttacttgcccgaaggggaaggaggacgtccccttacgggaatataaata


ttagtggcagtggtacaataaataaattgtatgtaaaccccttcgggcaactaaagtttatcgcagtatataaatatcggcagttggcaggcaa


ctgccactaaaattcatttgcccgaaggggacgtccactaatatttatattcccgtaaggggacgtcccgaaggggaaggggacgtcctaa


acggagcattaaaatccctaagtttacttgcctaggcagttggcaggatatttatatacgatattaatacttttgctactggcacactaaaatttat


ttgcccgtaaggggacgtccttcggtggttatataaataatcccgtagggggagggggatgtcccgtagggggaggggagtggaggctc


caacggaggttggagcttctttggtttcctaggcattatttaaatattttttaaccctagcactagaactgagattccagacggcgacccgtaaa


gttcttcagtcccctcagctttttcacaaccaagttcgggatggattggtgtgggtccaactgagcaaagagcaccaaggttaactgcatctct


gtgagatgctagttaaactaagcttagcttagctcataaacgatagttacccgcaaggggttatgtaattatattataaggtcaaaatcaaacg


gcctttagtatatctcggctaaagccattgctgactgtacacctgatacctatataacggcttgtctagccgcggccttagagagcactcatctt


gagtttagcttcctacttagatgctttcagcagttatctatccatgcgtagctacccagcgtttcccattggaatgagaactggtacacaattgg


catgtcctttcaggtcctctcgtactatgaaaggctactctcaatgctctaacgcctacaccggatatggaccaaactgtctcacgcatgaaat


tttaaagccgaataaaacttgcggtctttaaaactaacccctttactttcgtaaaggcatggactatgtcttcatcctgctactgttaatggcagg


agtcggcgtattatactttcccactCTCGAGGGGGGGCCCGGTACCCAATTCGCCCTATAGTGAGTC


GTATTACAATTCACTGGCCGTCGTTTTACAACGTCGTGACTGGGAAAACCCTGGCGT


TACCCAACTTAATCGCCTTGCAGCACATCCCCCTTTCGCCAGCTGGCGTAATAGCGA


AGAGGCCCGCACCGATCGCCCTTCCCAACAGTTGCGCAGCCTGAATGGCGAATGGG


ACGCGCCCTGTAGCGGCGCATTAAGCGCGGCGGGTGTGGTGGTTACGCGCAGCGTG


ACCGCTACACTTGCCAGCGCCCTAGCGCCCGCTCCTTTCGCTTTCTTCCCTTCCTTTC


TCGCCACGTTCGCCGGCTTTCCCCGTCAAGCTCTAAATCGGGGGCTCCCTTTAGGGT


TCCGATTTAGTGCTTTACGGCACCTCGACCCCAAAAAACTTGATTAGGGTGATGGTT


CACGTAGTGGGCCATCGCCCTGATAGACGGTTTTTCGCCCTTTGACGTTGGAGTCCA


CGTTCTTTAATAGTGGACTCTTGTTCCAAACTGGAACAACACTCAACCCTATCTCGG


TCTATTCTTTTGATTTATAAGGGATTTTGCCGATTTCGGCCTATTGGTTAAAAAATGA


GCTGATTTAACAAAAATTTAACGCGAATTTTAACAAAATATTAACGCTTACAATTTA


GGTG



22
GCACTTTTCGGGGAAATGTGCGCGGAACCCCTATTTGTTTATTTTTCTAAATACATT
Endo-xylanase


CAAATATGTATCCGCTCATGAGACAATAACCCTGATAAATGCTTCAATAATATTGA
insertion cassette


AAAAGGAAGAGTATGAGTATTCAACATTTCCGTGTCGCCCTTATTCCCTTTTTTGCG
(D1 KAN-BD11)


GCATTTTGCCTTCCTGTTTTTGCTCACCCAGAAACGCTGGTGAAAGTAAAAGATGCT


GAAGATCAGTTGGGTGCACGAGTGGGTTACATCGAACTGGATCTCAACAGCGGTAA


GATCCTTGAGAGTTTTCGCCCCGAAGAACGTTTTCCAATGATGAGCACTTTTAAAGT


TCTGCTATGTGGCGCGGTATTATCCCGTATTGACGCCGGGCAAGAGCAACTCGGTC


GCCGCATACACTATTCTCAGAATGACTTGGTTGAGTACTCACCAGTCACAGAAAAG


CATCTTACGGATGGCATGACAGTAAGAGAATTATGCAGTGCTGCCATAACCATGAG


TGATAACACTGCGGCCAACTTACTTCTGACAACGATCGGAGGACCGAAGGAGCTAA


CCGCTTTTTTGCACAACATGGGGGATCATGTAACTCGCCTTGATCGTTGGGAACCGG


AGCTGAATGAAGCCATACCAAACGACGAGCGTGACACCACGATGCCTGTAGCAAT


GGCAACAACGTTGCGCAAACTATTAACTGGCGAACTACTTACTCTAGCTTCCCGGC


AACAATTAATAGACTGGATGGAGGCGGATAAAGTTGCAGGACCACTTCTGCGCTCG


GCCCTTCCGGCTGGCTGGTTTATTGCTGATAAATCTGGAGCCGGTGAGCGTGGGTCT


CGCGGTATCATTGCAGCACTGGGGCCAGATGGTAAGCCCTCCCGTATCGTAGTTATC


TACACGACGGGGAGTCAGGCAACTATGGATGAACGAAATAGACAGATCGCTGAGA


TAGGTGCCTCACTGATTAAGCATTGGTAACTGTCAGACCAAGTTTACTCATATATAC


TTTAGATTGATTTAAAACTTCATTTTTAATTTAAAAGGATCTAGGTGAAGATCCTTTT


TGATAATCTCATGACCAAAATCCCTTAACGTGAGTTTTCGTTCCACTGAGCGTCAGA


CCCCGTAGAAAAGATCAAAGGATCTTCTTGAGATCCTTTTTTTCTGCGCGTAATCTG


CTGCTTGCAAACAAAAAAACCACCGCTACCAGCGGTGGTTTGTTTGCCGGATCAAG


AGCTACCAACTCTTTTTCCGAAGGTAACTGGCTTCAGCAGAGCGCAGATACCAAAT


ACTGTCCTTCTAGTGTAGCCGTAGTTAGGCCACCACTTCAAGAACTCTGTAGCACCG


CCTACATACCTCGCTCTGCTAATCCTGTTACCAGTGGCTGCTGCCAGTGGCGATAAG


TCGTGTCTTACCGGGTTGGACTCAAGACGATAGTTACCGGATAAGGCGCAGCGGTC


GGGCTGAACGGGGGGTTCGTGCACACAGCCCAGCTTGGAGCGAACGACCTACACC


GAACTGAGATACCTACAGCGTGAGCTATGAGAAAGCGCCACGCTTCCCGAAGGGA


GAAAGGCGGACAGGTATCCGGTAAGCGGCAGGGTCGGAACAGGAGAGCGCACGAG


GGAGCTTCCAGGGGGAAACGCCTGGTATCTTTATAGTCCTGTCGGGTTTCGCCACCT


CTGACTTGAGCGTCGATTTTTGTGATGCTCGTCAGGGGGGCGGAGCCTATGGAAAA


ACGCCAGCAACGCGGCCTTTTTACGGTTCCTGGCCTTTTGCTGGCCTTTTGCTCACAT


GTTCTTTCCTGCGTTATCCCCTGATTCTGTGGATAACCGTATTACCGCCTTTGAGTGA


GCTGATACCGCTCGCCGCAGCCGAACGACCGAGCGCAGCGAGTCAGTGAGCGAGG


AAGCGGAAGAGCGCCCAATACGCAAACCGCCTCTCCCCGCGCGTTGGCCGATTCAT


TAATGCAGCTGGCACGACAGGTTTCCCGACTGGAAAGCGGGCAGTGAGCGCAACG


CAATTAATGTGAGTTAGCTCACTCATTAGGCACCCCAGGCTTTACACTTTATGCTTC


CGGCTCGTATGTTGTGTGGAATTGTGAGCGGATAACAATTTCACACAGGAAACAGC


TATGACCATGATTACGCCAAGCTCGAAATTAACCCTCACTAAAGGGAACAAAAGCT


GGAGCTCCACCGCGGTGGCGGCCGCTCTAGCACTAGTGGATCGCCCGGGCTGCAGG


AATTCcatatttagataaacgatttcaagcagcagaattagctttattagaacaaacttgtaaagaaatgaatgtaccaatgccgcgcatt


gtagaaaaaccagataattattatcaaattcgacgtatacgtgaattaaaacctgatttaacgattactggaatggcacatgcaaatccattaga


agctcgaggtattacaacaaaatggtcagttgaatttacttttgctcaaattcatggatttactaatacacgtgaaattttagaattagtaacacag


cctcttagacgcaatctaatgtcaaatcaatctgtaaatgctatttcttaatataaatcccaaaagattttttttataatactgagacttcaacactta


cttgtttttattttttgtagttacaattcactcacgttaaagacattggaaaatgaggcaggacgttagtcgatatttatacactcttaagtttacttgc


ccaatatttatattaggacgtccccttcgggtaaataaattttagtggcagtggtaccaccactgcctattttaatactccgaagcatataaatat


acttcggagtatataaatatccactaatatttatattaggcagttggcaggcaacaataaataaatttgtcccgtaaggggacgtcccgaagg


ggaaggggaagaaggcagttgcctcgcctatcggctaacaagttcctttggagtatataaccgcctacaggtaacttaaagaacatttgtta


cccgtaggggtttatacttctaattgcttcttctgaacaataaaatggtttgtgtggtctgggctaggaaacttgtaacaatgtgtagtgtcgcttc


cgcttcccttcgggacgtccccttcgggtaagtaaacttaggagtattaaatcgggacgtccccttcgggtaaataaatttcagtggacgtcc


ccttacgggacgccagtagacgtcagtggcagttgcctcgcctatcggctaacaagttccttcggagtatataaatatagaatgtttacatact


cctaagtttacttgcctccttcggagtatataaatatcccgaaggggaaggaggacgccagtggcagtggtaccgccactgcctgcttcctc


cttcggagtatgtaaaccccttcgggcaactaaagtttatcgcagtatataaatataggcagttggcaggcaactgccactgacgtcctatttt


aatactccgaaggaggcagttggcaggcaactgccactgacgtcccgtaagggtaaggggacgtccactggcgtcccgtaaggggaag


gggacgtaggtacataaatgtgctaggtaactaacgtttgattttttgtggtataatatatgtaccatgcttttaatagaagcttgaatttataaatt


aaaatatttttacaatattttacggagaaattaaaactttaaaaaaattaacatATGGTACCAGTATCTTTCACAAGTCT


TTTAGCAGCATCTCCACCTTCACGTGCAAGTTGCCGTCCAGCTGCTGAAGTGGAATC


AGTTGCAGTAGAAAAACGTCAAACAATTCAACCAGGTACAGGTTACAATAACGGTT


ACTTTTATTCTTACTGGAATGATGGACACGGTGGTGTTACATATACTAATGGACCTG


GTGGTCAATTTAGTGTAAATTGGAGTAACTCAGGCAATTTTGTTGGAGGAAAAGGT


TGGCAACCTGGTACAAAGAATAAGGTAATCAATTTCTCTGGTAGTTACAACCCTAA


TGGTAATTCTTATTTAAGTGTATACGGTTGGAGCCGTAACCCATTAATTGAATATTA


TATTGTAGAGAACTTTGGTACATACAACCCTTCAACAGGTGCTACTAAATTAGGTGA


AGTTACTTCAGATGGATCAGTTTATGATATTTATCGTACTCAACGCGTAAATCAACC


ATCTATAATTGGAACTGCCACTTTCTACCAATACTGGAGTGTAAGACGTAATCATCG


TTCAAGTGGTAGTGTTAATACAGCAAACCACTTTAATGCATGGGCTCAACAAGGTTT


AACATTAGGTACAATGGACTATCAAATTGTAGCTGTTGAAGGTTATTTTTCATCAGG


TAGTGCTTCTATCACTGTTAGCGGTACCGGTGAAAACTTATACTTTCAAGGCTCAGG


TGGCGGTGGAAGTGATTACAAAGATGATGATGATAAAGGAACCGGTTAATCTAGAct


tagcttcaactaactctagctcaaacaactaatttttttttaaactaaaataaatctggttaaccatacctggtttattttagtttagtttatacacactt


ttcatatatatatacttaatagctaccataggcagttggcaggacgtccccttacgggacaaatgtatttattgttgcctgccaactgcctaatat


aaatattagtggacgtccccttccccttacgggcaagtaaacttagggattttaatgctccgttaggaggcaaataaattttagtggcagttgc


ctcgcctatcggctaacaagttccttcggagtatataaatatcctgccaactgccgatatttatatactaggcagtggcggtaccactcgacG


GATCCTACGTAATCGATGAATTCGATCCCATTTTTATAACTGGTCTCAAAATACCTA


TAAACCCATTGTTCTTCTCTTTTAGCTCTAAGAACAATCAATTTATAAATATATTTAT


TATTATGCTATAATATAAATACTATATAAATACATTTACCTTTTTATAAATACATTTA


CCTTTTTTTTAATTTGCATGATTTTAATGCTTATGCTATCTTTTTTATTTAGTCCATAA


AACCTTTAAAGGACCTTTTCTTATGGGATATTTATATTTTCCTAACAAAGCAATCGG


CGTCATAAACTTTAGTTGCTTACGACGCCTGTGGACGTCCCCCCCTTCCCCTTACGG


GCAAGTAAACTTAGGGATTTTAATGCAATAAATAAATTTGTCCTCTTCGGGCAAATG


AATTTTAGTATTTAAATATGACAAGGGTGAACCATTACTTTTGTTAACAAGTGATCT


TACCACTCACTATTTTTGTTGAATTTTAAACTTATTTAAAATTCTCGAGAAAGATTTT


AAAAATAAACTTTTTTAATCTTTTATTTATTTTTTCTTTTTTcgtatggaattgcccaatattattcaac


aatttatcggaaacagcgttttagagccaaataaaattggtcagtcgccatcggatgtttattcttttaatcgaaataatgaaactttttttcttaag


cgatctagcactttatatacagagaccacatacagtgtctctcgtgaagcgaaaatgttgagttggctctctgagaaattaaaggtgcctgaa


ctcatcatgacttttcaggatgagcagtttgaatttatgatcactaaagcgatcaatgcaaaaccaatttcagcgctttttttaacagaccaagaa


ttgcttgctatctataaggaggcactcaatctgttaaattcaattgctattattgattgtccatttatttcaaacattgatcatcggttaaaagagtca


aaattttttattgataaccaactccttgacgatatagatcaagatgattttgacactgaattatggggagaccataaaacttacctaagtctatgg


aatgagttaaccgagactcgtgttgaagaaagattggttttttctcatggcgatatcacggatagtaatatttttatagataaattcaatgaaattt


attttttagaccttggtcgtgctgggttagcagatgaatttgtagatatatcctttgttgaacgttgcctaagagaggatgcatcggaggaaact


gcgaaaatatttttaaagcatttaaaaaatgatagacctgacaaaaggaattattttttaaaacttgatgaattgaattgaTTCCAAGCA


TTATCTAAAATACTCTGCAGGCACGCTAGCTTGTACTCAAGCTCGTAACGAAGGTCG


TGACCTTGCTCGTGAAGGTGGCGACGTAATTCGTTCAGCTTGTAAATGGTCTCCAGA


ACTTGCTGCTGCATGTGAAGTTTGGAAAGAAATTAAATTCGAATTTGATACTATTGA


CAAACTTTAATTTTTATTTTTCATGATGTTTATGTGAATAGCATAAACATCGTTTTTA


TTTTTTATGGTGTTTAGGTTAAATACCTAAACATCATTTTACATTTTTAAAATTAAGT


TCTAAAGTTATCTTTTGTTTAAATTTGCCTGTGCTTTATAAATTACGATGTGCCAGAA


AAATAAAATCTTAGCTTTTTATTATAGAATTTATCTTTATGTATTATATTTTATAAGT


TATAATAAAAGAAATAGTAACATACTAAAGCGGATGTAGCGCGTTTATCTTAACGG


AAGGAATTCGGCGCCTACGTAGGATCCgtatccatgctagcaatatctgatggtacttgcatttcataagtttggcct


ggaataaccaccgtttcggaagtacctgtcgctttaagttttatagctaaatctaaagtttctttaagtcttttagctgtattaaatactccacgactt


tcccttacgggacaataaataaatttgtccccttccccttacgtgacgtcagtggcagttgcctgccaactgcctccttcggagtattaaaatcc


tatatttatatactcctaagtttacttgcccaatatttatattaggcagttggcaggcaactgccactgacgtcccgaaggggaaggggaagga


cgtccccttcgggtaaataaattttagtggcagtggtaccaccactgcctgcttcctccttccccttcgggcaagtaaacttagaataaaattta


tttgctgcgctagcaggtttacatactcctaagtttacttgcccgaaggggaaggaggacgtccccttacgggaatataaatattagtggcag


tggtacaataaataaattgtatgtaaaccccttcgggcaactaaagtttatcgcagtatataaatatagaatgtttacatactccgaaggaggac


gccagtggcagtggtaccgccactgcctgtccgcagtattaacatcctattttaatactccgaaggaggcagttggcaggcaactgccacta


atatttatattcccgtaaggggacgtcctaatttaatactccgaaggaggcagttggcaggcaactgccactaaaatttatttgcctcctaacg


gagcattaaaatcccgaaggggacgtcccgaaggggaaggggaaggaggcaactgcctgcttcctccttccccttcgggcaagtaaact


tagaataaaatttatttgctgcgctagcaggtttacatactcctaagtttacttgcccgaaggggaaggaggacgtccccttacgggaatataa


atattagtggcagtggtacaataaataaattgtatgtaaaccccttcgggcaactaaagtttatcgcagtatataaatatcggcagttggcagg


caactgccactaaaattcatttgcccgaaggggacgtccactaatatttatattcccgtaaggggacgtcccgaaggggaaggggacgtcc


taaacggagcattaaaatccctaagtttacttgcctaggcagttggcaggatatttatatacgatattaatacttttgctactggcacactaaaatt


tatttgcccgtaaggggacgtccttcggtggttatataaataatcccgtagggggagggggatgtcccgtagggggaggggagtggagg


ctccaacggaggttggagcttctttggtttcctaggcattatttaaatattttttaaccctagcactagaactgagattccagacggcgacccgt


aaagttcttcagtcccctcagctttttcacaaccaagttcgggatggattggtgtgggtccaactgagcaaagagcaccaaggttaactgcat


ctctgtgagatgctagttaaactaagcttagcttagctcataaacgatagttacccgcaaggggttatgtaattatattataaggtcaaaatcaa


acggcctttagtatatctcggctaaagccattgctgactgtacacctgatacctatataacggcttgtctagccgcggccttagagagcactca


tcttgagtttagcttcctacttagatgctttcagcagttatctatccatgcgtagctacccagcgtttcccattggaatgagaactggtacacaatt


ggcatgtcctttcaggtcctctcgtactatgaaaggctactctcaatgctctaacgcctacaccggatatggaccaaactgtctcacgcatga


aattttaaagccgaataaaacttgcggtctttaaaactaacccctttactttcgtaaaggcatggactatgtcttcatcctgctactgttaatggca


ggagtcggcgtattatactttcccactCTCGAGGGGGGGCCCGGTACCCAATTCGCCCTATAGTGAG


TCGTATTACAATTCACTGGCCGTCGTTTTACAACGTCGTGACTGGGAAAACCCTGGC


GTTACCCAACTTAATCGCCTTGCAGCACATCCCCCTTTCGCCAGCTGGCGTAATAGC


GAAGAGGCCCGCACCGATCGCCCTTCCCAACAGTTGCGCAGCCTGAATGGCGAATG


GGACGCGCCCTGTAGCGGCGCATTAAGCGCGGCGGGTGTGGTGGTTACGCGCAGCG


TGACCGCTACACTTGCCAGCGCCCTAGCGCCCGCTCCTTTCGCTTTCTTCCCTTCCTT


TCTCGCCACGTTCGCCGGCTTTCCCCGTCAAGCTCTAAATCGGGGGCTCCCTTTAGG


GTTCCGATTTAGTGCTTTACGGCACCTCGACCCCAAAAAACTTGATTAGGGTGATGG


TTCACGTAGTGGGCCATCGCCCTGATAGACGGTTTTTCGCCCTTTGACGTTGGAGTC


CACGTTCTTTAATAGTGGACTCTTGTTCCAAACTGGAACAACACTCAACCCTATCTC


GGTCTATTCTTTTGATTTATAAGGGATTTTGCCGATTTCGGCCTATTGGTTAAAAAAT


GAGCTGATTTAACAAAAATTTAACGCGAATTTTAACAAAATATTAACGCTTACAATT


TAGGTG



23
GTGCACTCTCAGTACAATCTGCTCTGATGCCGCATAGTTAAGCCAGCCCCGACACCC
β-glucosidase insertion


GCCAACACCCGCTGACGCGCCCTGACGGGCTTGTCTGCTCCCGGCATCCGCTTACA
cassette


GACAAGCTGTGACCGTCTCCGGGAGCTGCATGTGTCAGAGGTTTTCACCGTCATCAC
(3HB KAN-rbcL-BD09)


CGAAACGCGCGAGACGAAAGGGCCTCGTGATACGCCTATTTTTATAGGTTAATGTC


ATGATAATAATGGTTTCTTAGACGTCAGGTGGCACTTTTCGGGGAAATGTGCGCGG


AACCCCTATTTGTTTATTTTTCTAAATACATTCAAATATGTATCCGCTCATGAGACA


ATAACCCTGATAAATGCTTCAATAATATTGAAAAAGGAAGAGTATGAGTATTCAAC


ATTTCCGTGTCGCCCTTATTCCCTTTTTTGCGGCATTTTGCCTTCCTGTTTTGCTCAC


CCAGAAACGCTGGTGAAAGTAAAAGATGCTGAAGATCAGTTGGGTGCACGAGTGG


GTTACATCGAACTGGATCTCAACAGCGGTAAGATCCTTGAGAGTTTTCGCCCCGAA


GAACGTTTTCCAATGATGAGCACTTTTAAAGTTCTGCTATGTGGCGCGGTATTATCC


CGTATTGACGCCGGGCAAGAGCAACTCGGTCGCCGCATACACTATTCTCAGAATGA


CTTGGTTGAGTACTCACCAGTCACAGAAAAGCATCTTACGGATGGCATGACAGTAA


GAGAATTATGCAGTGCTGCCATAACCATGAGTGATAACACTGCGGCCAACTTACTT


CTGACAACGATCGGAGGACCGAAGGAGCTAACCGCTTTTTTGCACAACATGGGGGA


TCATGTAACTCGCCTTGATCGTTGGGAACCGGAGCTGAATGAAGCCATACCAAACG


ACGAGCGTGACACCACGATGCCTGTAGCAATGGCAACAACGTTGCGCAAACTATTA


ACTGGCGAACTACTTACTCTAGCTTCCCGGCAACAATTAATAGACTGGATGGAGGC


GGATAAAGTTGCAGGACCACTTCTGCGCTCGGCCCTTCCGGCTGGCTGGTTTATTGC


TGATAAATCTGGAGCCGGTGAGCGTGGGTCTCGCGGTATCATTGCAGCACTGGGGC


CAGATGGTAAGCCCTCCCGTATCGTAGTTATCTACACGACGGGGAGTCAGGCAACT


ATGGATGAACGAAATAGACAGATCGCTGAGATAGGTGCCTCACTGATTAAGCATTG


GTAACTGTCAGACCAAGTTTACTCATATATACTTTAGATTGATTTAAAACTTCATTTT


TAATTTAAAAGGATCTAGGTGAAGATCCTTTTTGATAATCTCATGACCAAAATCCCT


TAACGTGAGTTTTCGTTCCACTGAGCGTCAGACCCCGTAGAAAAGATCAAAGGATC


TTCTTGAGATCCTTTTTTTCTGCGCGTAATCTGCTGCTTGCAAACAAAAAAACCACC


GCTACCAGCGGTGGTTTGTTTGCCGGATCAAGAGCTACCAACTCTTTTTCCGAAGGT


AACTGGCTTCAGCAGAGCGCAGATACCAAATACTGTTCTTCTAGTGTAGCCGTAGTT


AGGCCACCACTTCAAGAACTCTGTAGCACCGCCTACATACCTCGCTCTGCTAATCCT


GTTACCAGTGGCTGCTGCCAGTGGCGATAAGTCGTGTCTTACCGGGTTGGACTCAA


GACGATAGTTACCGGATAAGGCGCAGCGGTCGGGCTGAACGGGGGGTTCGTGCAC


ACAGCCCAGCTTGGAGCGAACGACCTACACCGAACTGAGATACCTACAGCGTGAGC


TATGAGAAAGCGCCACGCTTCCCGAAGGGAGAAAGGCGGACAGGTATCCGGTAAG


CGGCAGGGTCGGAACAGGAGAGCGCACGAGGGAGCTTCCAGGGGGAAACGCCTGG


TATCTTTATAGTCCTGTCGGGTTTCGCCACCTCTGACTTGAGCGTCGATTTTTGTGAT


GCTCGTCAGGGGGGCGGAGCCTATGGAAAAACGCCAGCAACGCGGCCTTTTTACGG


TTCCTGGCCTTTTGCTGGCCTTTTGCTCACATGTTCTTTCCTGCGTTATCCCCTGATTC


TGTGGATAACCGTATTACCGCCTTTGAGTGAGCTGATACCGCTCGCCGCAGCCGAA


CGACCGAGCGCAGCGAGTCAGTGAGCGAGGAAGCGGAAGAGCGCCCAATACGCAA


ACCGCCTCTCCCCGCGCGTTGGCCGATTCATTAATGCAGCTGGCACGACAGGTTTCC


CGACTGGAAAGCGGGCAGTGAGCGCAACGCAATTAATGTGAGTTAGCTCACTCATT


AGGCACCCCAGGCTTTACACTTTATGCTTCCGGCTCGTATGTTGTGTGGAATTGTGA


GCGGATAACAATTTCACACAGGAAACAGCTATGACCATGATTACGCCaagctcgcggccgc


agtactCTGCAGATTTTATGCAAAATTAAAGTCTTGTGACAACAGCTTTCTCCTTAAGTG


CAAATATCGCCCATTCTTTCCTCTTTTCGTATATAAATGCTGTAATAGTAGGATGTC


GTACCCGTAAAGGTACGACATTGAATATTAATATACTCCTAAGTTTACTTTCCCAAT


ATTTATATTAGGACGTCCCCTTCGGGTAAATAAATTTTAGTGGCAGTGGTACCGCCA


CTCCCTATTTTAATACTGCGAAGGAGGCAGTTGGCAGGCAACTCGTCGTTCGCAGTA


TATAAATATCCACTAATATTTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGG


GAAAGAAGCAGTCGCCTCCTTGCGAAAAGGTTTACTTGCCCGACCAGTGAAAAGCA


TGCTGTAAGATATAAATCTACCCTGAAAGGGATGCATTTCACCATAATACTATACA


AATGGTGTTACCCTTTGAGGATCATAACGGTGCTACTGGAATATATGGTCTCTTCAT


GGATAGACGATAGCCATTTATTTACCCATTAAGGGGACATTAGTGGCCTGTCACTGC


TCCTTACGAGACGCCAGTGGACGTTCGTCCTAGAAAATTTATGCGCTGCCTAGAAG


CCCCAAAAGGGAAGTTTACTGACTCGTTAGAGCGTGCGCTAACAGGTTTAAATACT


TCAATATGTATATTAGGACGCCGGTGGCAGTGGTACCGCCACTGCCACCGTCGGAG


GACGTCCCTTACGGTATATTATATACTAGGATTTTAATACTCCGAAGGAGGCAGTGG


CGGTACCACTGCCACTAATATTTATATTCCCGTAAGGGACGTCCTCCTTCGGAGTAT


GTAAACATTCTAAGTTTACTTGCCCAATATTTATATTAGGCAGTTGGCAGGCAACTG


CTAGCTCTCCTCCTTCGGAGTATGTAAACATCGCAGTATATAAATATCCACTAATAT


TTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGGGAAGGACGTCAGTGGCAG


TTGCCTGCCAACTGCCTAGGCAAGTAAACTTAGGAGTATATAAATATAGGCAGTCG


CGGTACCACTGCCACTGACGTCCTGCCAACTGCCTAGGCAAGTAAACTTAAGTGGC


ACTAAAATGCATTTGCCCGAAGGGGAAGGAGGACGCCAGTGGCAGTGGTACCGCC


ACTGCCTCCTTCGGAGTATTAAAATCCTAGTATGTAAATCTGCTAGCGCAGGAAATA


AATTTTATTCTATTTATATACTCCGTTAGGAGGTAAGTAAACCCCTTCCCCTTCGGG


ACGTCAGTGCAGTTGCCTGCCAACTGCCTAATATAAATATTAGACCACTAAAGTTTG


GCAACTGCCAACTGTTGTCCTTCGGAGGAAAAAAAATGGTTAACTCGCAAGCAGTT


AACATAACTAAAGTTTGTTACTTTACCGAAGACGTTTACCCTTTCTCGGTTAAGGAG


ACGGAGACAGTTGCACTGTGACTGCCTAGTATAGCAATTTTGTTTTTGTTTATATGC


TCGACAAAATGACTTTCATAAAAATATAAAGTAGTTAGCTAGTTATTTTATATCACT


ATAACTAGGGTTCTCAGAGGCACCGAAGTCACTTGTAAAAATAGTACTTTTTAACTT


GTTTAATCTTCGTGTTCTTCAAAAGGATCACGTAATTTTTTTGAAGGTGGACCAAAA


CTAACATAAACTGAATAGCCAGTTACACTTAACAGAAGAAACCATAAAAAAAAGG


TAAAGAAAAAAGCTGGACTTTCCATAGCTCATTTAATAATAAAATTATTCTCTTTTC


AACATATCTCTTAGATAGTTCAAAAGACTTGACGACTGTGTCCCACATTTTTAAACA


AAATTAATCTACTCAAAATTTTGCCCTGAGAAAGAATAACTTACTTCGTTTTTGCAG


TAGCCATTCATGTCACTTTGAAACTGTCCTTACAAAGTTAAACATTAATTAAAAATT


ATTTAATTTTTATATAACAAATATTATATTAAATAAAAAATGAACAAAGAACTTCTA


AGATCGTCTTTAGTGAGTAATTAAAGAGTTTTACTTACCAGACAAGGCAGTTTTTTC


ATTCTTTTAAAGCAGGCAGTTCTGAAGGGGAAAAGGGACTGCCTACTGCGGTCCTA


GGTAAATACATTTTTATGCAATTTATTTCTTGTGCTAGTAGGTTTCTATACTCACAAG


AAGCAACCCCTTGACGAGAGAACGTTATCCTCAGAGTATTTATAATCCTGAGAGGG


AATGCACTGAAGAATATTTTCCTTATTTTTTACAGAAAGTAAATAAAATAGCGCTAA


TAACGCTTAATTCATTTAATCAATTATGGCAACAGGAACTTCTAAAGCTAAACCATC


AAAAGTAAATTCAGACTTCCAAGAACCTGGTTTAGTTACACCATTAGGTACTTTATT


ACGTCCACTTAACTCAGAAGCAGGTAAAGTATTACCAGGCTGGGGTACAACTGTTT


TAATGGCTGTATTTATCCTTTTATTTGCAGCATTCTTATTAATCATTTTAGAAATTTA


CAACAGTTCTTTAATTTTAGATGACGTTTCTATGAGTTGGGAAACTTTAGCTAAAGT


TTCTTAATTTTATTTAACACAAACATAAAATATAAAACTGTTTGTTAAGGCTAGCTG


CTAAGTCTTCTTTTCGCTAAGGTAAACTAAGCAACTCAACCATATTTATATTCGGCA


GTGGCACCGCCAACTGCCACTGGCCTTCCGTTAAGATAAACGCGTggatctcacgtgactagtc


acctagtgtcgagtggtaccgccactgcctagtatataaatatcggcagttggcaggatatttatatactccgaaggaacttgttagccgatag


gcgaggcaactgccactaaaatttatttgcctcctaacggagcattaaaatccctaagtttacttgcccgtaaggggaaggggacgtccact


aatatttatattaggcagttggcaggcaacaataaatacatttgtcccgtaaggggacgtcctgccaactgcctatggtagctattaagtatata


tatatgaaaagtgtgtataaactaaactaaaataaaccaggtatggttaaccagatttattttagtttaaaaaaaaattagttgtttgagctagagt


tagttgaagctaagtctagaTTAACCGGTTCCTTTATCATCATCATCTTTGTAATCACTTCCACCG


CCACCTGAGCCTTGAAAGTATAAGTTTTCACCGGTACCTGCAGCAGCTATTAATTCA


TCAAATAAAGGTTTTAAACTTTTAGCACTCTTTTTAGGGAAACGTTTTTGGCCGTTTT


CGTAATCAACGTAGGTTACACCAAAACGTGTAACGTAACCATCAGCCCATTCAAAG


TTATCCATTAAAGACCATGCGAAATAACCTTTTACATTTACACCATCTAATTCAACG


GCTGTAACCATAGCTCTAATGTATTCGTTATAATACTTAACACGAAAATCATCTTCA


AGAATCTTTTCCTTTGGTAAGTCACTTTCACCTTTTATTGATGTTCCGTTTTCTGTAA


CATAAATTGGTGGATAACCATAACGTTTGCTTATCCATACAAGGAAGTCACGGAAA


CCAGCTGCACAAGGACGAAGCCAGGGGCTCTGTGTTTCAGGACCGATACAATTACC


TTGTTTATTAGTAAATAAAACATCTACATTACCTACTGTGTCATCAGCACTTGCGGG


TGAGCTACGGTGACGAATATAGTTTGAAGTATAGTGGTTCATACCATAAAAGTCAT


TACTACCATGAACTAAAGCACGTTCTTCTGGTGTAAAAGTAGGTAAACGATCACCT


AATTGTTTACGCATTGAAGCAGGATAATCACCAAGATAGATGGGGTCAGCAAACCA


AGCAGTGAAAAATTCTAAGCGACGTTCAGCGGCTTCTTTATCTGCAGGATCAGCGG


CATCCCAGGGATATGTGAAGTCACCATTTAACACAATACCTATTTGACCATCACCTG


AAGCAGGTTTGAAATCATCTCTATATGCTTTTACAGCTCTACCGTGAGCTACTAAAA


TGTTATGGCCCACTGTCCAGGGCTCACTTGTACTTTGTCTGCCTGGGGCAAAGGTGC


CTGAACCATAACCAGGAATAGCAGAACATAAAGGTTCATTAAAAGTAATCCAGTTT


CTTACTTTGGGAAGTGCACGAAACATAACTCTTGCATAGTTTTCGAAATCTAAAGGA


AATTCTGTACGGTTTAAAAGACCACCATAACGTTGGTGTAAACCTTCAGGTAAATCC


CAGTGAAATAAAGTGATAAAAGGTGTAATACCTGCGTCTAATAAGTCATCTACAAA


TTTAACATAGTGATCAATACCAGCTTGATTTACTGCGTCACCACGGCCACCTTCAGG


AATAATTCTTGACCATGAGATAGAGAAACGATATGATTTAGCACCTAAAGATTTTA


AAAGTGCAATGTCTTCAGCTGTACGATTATATGAGTCACATGCTGTTACACCTGATG


AACCATCAGCAATTTTACCTGGTTGTGCACAGAATGTGTCCCAAATAGAAGGTCCA


CGTCCATCTTGATCAACTGCACCTTCAATTTGATAAGCTGCGGTAGCGAAACCCCAT


TGGAAATCCTTTGGTAATGGTACCATatgcactttgcattacctccgtacaaattattttgatttctataaagttttgctta


aataaaaatttttaatttttaacgtccacccatataaataataaatatggtgaaacctttaacaacaaaaatcctcttgtaccatattaatccaaaag


aattaaggacaaaagcttatctccaacatttttaaaacacagagtaaaaataatgttgtttttaagaatagaattttataacttgtattttaaatatga


tctaatttatttgtgctaaaaattgcagttggaaagtaattttaaaaataatttagatcatatttattaaataaagttgatttaaaacaacttaatcgttt


ttaattgttaattaaaaacataattttaaatctttttatatttaaattaccttatatactactagtgatatctacgtaatcgatgaattcgatcccattttta


taactggatctcaaaatacctataaacccattgttcttctcttttagctctaagaacaatcaatttataaatatatttattattatgctataatataaata


ctatataaatacatttacctttttataaatacatttaccttttttttaatttgcatgattttaatgcttatgctatcttttttatttagtccataaaacctttaaa


ggaccttttcttatgggatatttatattttcctaacaaagcaatcggcgtcataaactttagttgcttacgacgcctgtggacgtcccccccttccc


cttacgggcaagtaaacttagggattttaatgcaataaataaatttgtcctcttcgggcaaatgaattttagtatttaaatatgacaagggtgaac


cattacttttgttaacaagtgatcttaccactcactatttttgttgaattttaaacttatttaaaattctcgagaaagattttaaaaataaacttttttaatc


ttttatttattttttcttttttCGTATGGAATTGCCCAATATTATTCAACAATTTATCGGAAACAGCGT


TTTAGAGCCAAATAAAATTGGTCAGTCGCCATCGGATGTTTATTCTTTTAATCGAAA


TAATGAAACTTTTTTTCTTAAGCGATCTAGCACTTTATATACAGAGACCACATACAG


TGTCTCTCGTGAAGCGAAAATGTTGAGTTGGCTCTCTGAGAAATTAAAGGTGCCTG


AACTCATCATGACTTTTCAGGATGAGCAGTTTGAATTTATGATCACTAAAGCGATCA


ATGCAAAACCAATTTCAGCGCTTTTTTTAACAGACCAAGAATTGCTTGCTATCTATA


AGGAGGCACTCAATCTGTTAAATTCAATTGCTATTATTGATTGTCCATTTATTTCAA


ACATTGATCATCGGTTAAAAGAGTCAAAATTTTTTATTGATAACCAACTCCTTGACG


ATATAGATCAAGATGATTTTGACACTGAATTATGGGGAGACCATAAAACTTACCTA


AGTCTATGGAATGAGTTAACCGAGACTCGTGTTGAAGAAAGATTGGTTTTTTCTCAT


GGCGATATCACGGATAGTAATATTTTTATAGATAAATTCAATGAAATTTATTTTTTA


GACCTTGGTCGTGCTGGGTTAGCAGATGAATTTGTAGATATATCCTTTGTTGAACGT


TGCCTAAGAGAGGATGCATCGGAGGAAACTGCGAAAATATTTTTAAAGCATTTAAA


AAATGATAGACCTGACAAAAGGAATTATTTTTTAAAACTTGATGAATTGAATTGAttc


caagcattatctaaaatactctgcaggcacgctagcttgtactcaagctcgtaacgaaggtcgtgaccttgctcgtgaaggtggcgacgtaa


ttcgttcagcttgtaaatggtctccagaacttgctgctgcatgtgaagtttggaaagaaattaaattcgaatttgatactattgacaaactttaattt


ttatttttcatgatgtttatgtgaatagcataaacatcgtttttatttttatggtgtttaggttaaatacctaaacatcattttacatttttaaaattaagttc


taaagttatcttttgtttaaatttgcctgtctttataaattacgatgtgccagaaaaataaaatcttagctttttattatagaatttatctttatgtattatat


tttataagttataataaaagaaatagtaacatactaaagcggatgtagcgcgtttatcttaacggaaggaattcggcgcctacgtacccgggt


cgcgaggatccACGCGTTAATAGCTCACTTTTCTTTAAATTTAATTTTTAATTTAAAGGTG


TAAGCAAATTGCCTGACGAGAGATCCACTTAAAGGATGACAGTGGCGGGCTACTGC


CTACTTCCCTCCGGGATAAAATTTATTTGAAAAACGTTAGTTACTTCCTAACGGAGC


ATTGACATCCCCATATTTATATTAGGACGTCCCCTTCGGGTAAATAAATTTTAGTGG


ACGTCCCCTTCGGGCAAATAAATTTTAGTGGACAATAAATAAATTTGTTGCCTGCCA


ACTGCCTAGGCAAGTAAACTTGGGAGTATTAAAATAGGACGTCAGTGGCAGTTGCC


TGCCAACTGCCTATATTTATATACTGCGAAGCAGGCAGTGGCGGTACCACTGCCACT


GGCGTCCTAATATAAATATTGGGCAACTAAAGTTTATAGCAGTATTAACATCCTATA


TTTATATACTCCGAAGGAACTTGTTAGCCGATAGGCGAGGCAACAAATTTATTTATT


GTCCCGTAAAAGGATGCCTCCAGCATCGAAGGGGAAGGGGACGTCCTAGGCCATA


AAACTAAAGGGAAATCCATAGTAACTGATGTTATAAATTTATAGACTCCAAAAAAC


AGCTGCGTTATAAATAACTTCTGTTAAATATGGCCAAGGGGACAGGGGCACTTTCA


ACTAAGTGTACATTAAAAATTGACAATTCAATTTTTTTTAATTATAATATATATTTA


GTAAAATATAACAAAAAGCCCCCATCGTCTAGgtagaattccagctggcggccgccctatg



24
agatctcgatcccgcgaaattaatacgactcactataggggaattgtgagcggataacaattcccctctagaaataattttgtttaactttaaga
Exo-β-


aggagatataCATATGGTACCATATCGTAAACTTGCTGTTATTAGTGCTTTCTTAGCTACT
glucanase


GCTCGTGCACAGTCAGCATGTACCTTACAATCTGAAACTCATCCTCCATTAACATGG
insertion cassette


CAAAAATGTTCTTCAGGAGGTACTTGTACACAACAAACTGGCTCTGTAGTAATTGAT
(pET-21a-BD01)


GCTAACTGGCGTTGGACACATGCCACTAATAGTTCAACTAATTGTTATGACGGTAAT


ACTTGGTCATCAACACTTTGTCCCGATAACGAAACTTGTGCTAAAAATTGTTGTTTA


GATGGTGCAGCTTACGCTTCAACTTACGGCGTTACTACATCAGGTAACTCATTATCA


ATTGGTTTCGTGACTCAATCAGCACAAAAAAATGTAGGCGCACGTTTATACTTAATG


GCAAGTGACACAACCTATCAAGAATTTACATTATTAGGTAATGAGTTCAGTTTCGAC


GTAGATGTGAGTCAATTACCATGTGGTTTAAATGGTGCTCTTTATTTCGTTTCAATG


GACGCTGATGGCGGTGTAAGCAAATATCCTACTAATACAGCAGGTGCTAAATACGG


AACAGGCTATTGTGATTCTCAGTGTCCTCGTGATTTAAAGTTTATTAACGGTCAAGC


TAACGTGGAAGGTTGGGAACCAAGTAGTAATAATGCAAATACTGGAATTGGTGGTC


ACGGATCTTGTTGTTCTGAAATGGATATTTGGGAAGCTAATTCAATTAGTGAAGCAT


TAACTCCACATCCTTGTACTACCGTTGGCCAAGAAATTTGTGAAGGCGACGGTTGCG


GTGGAACATACAGTGATAACCGTTATGGTGGTACATGTGATCCTGATGGCTGCGAT


TGGGACCCATATCGTTTAGGAAATACATCTTTTTATGGACCAGGAAGTTCATTCACA


TTAGATACAACTAAAAAGTTAACAGTTGTTACACAGTTCGAAACTAGCGGTGCTAT


TAATCGTTATTACGTGCAAAATGGTGTAACTTTTCAACAACCAAATGCAGAATTAG


GTTCTTATTCTGGTAACGGCCTTAATGACGATTATTGTACAGCAGAAGAAGCAGAA


TTTGGTGGTAGCAGCTTCTCAGATAAAGGTGGTTTAACTCAATTCAAGAAAGCAAC


ATCAGGTGGTATGGTTTTAGTTATGTCATTATGGGATGACTATTATGCTAATATGTT


ATGGTTAGATAGTACATATCCTACAAACGAAACTTCAAGCACTCCTGGTGCTGTTCG


TGGTTCATGTTCAACTTCAAGTGGTGTACCTGCTCAAGTTGAAAGCCAAAGTCCTAA


TGCAAAAGTAACTTTTAGTAATATCAAATTTGGTCCAATTGGCTCTACAGGCGATCC


TTCAGGTGGTAATCCACCAGGTGGAAATCCACCTGGCACCACTACAACACGTCGTC


CTGCTACTACCACAGGTTCTTCTCCTGGACCAACACAATCTCATTACGGTCAATGTG


GTGGTATTGGTTATTCAGGTCCAACTGTGTGTGCATCAGGAACTACATGTCAAGTTT


TAAATCCATATTATAGCCAATGTTTAGGTACCGGTGAAAACTTATACTTTCAAGGCT


CAGGTGGCGGTGGAAGTGATTACAAAGATGATGATGATAAAGGAACCGGTTAATCT


AGACTCGAGcaccaccaccaccaccactgagatccggctgctaacaaagcccgaaaggaagctgagttggctgctgccaccgc


tgagcaataactagcataaccccttggggcctctaaacgggtcttgaggggttttttgctgaaaggaggaactatatccggattggcgaatg


ggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgccc


gctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtg


ctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgtt


ggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtctattcttttgatttataagggattttgccg


atttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgtttacaatttcaggtggcacttttcg


gggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgagacaataaccctgataaatgcttcaata


atattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaa


cgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatctcaacagcggtaagatccttgagag


ttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatcccgtattgacgccgggcaagagcaa


ctcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatcttacggatggcatgacagtaagaga


attatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggaggaccgaaggagctaaccgctttttt


gcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccataccaaacgacgagcgtgacaccacga


tgcctgcagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccggcaacaattaatagactggatggag


gcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatctggagccggtgagcgtgggtctcg


cggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacg


aaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaact


tcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagac


cccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtg


gtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagc


cgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgata


agtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagccc


agcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcg


gacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgt


cgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctttt


tacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttgagtgagct


gataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgcctgatgcggtattttctcctta


cgcatctgtgcggtatttcacaccgcatatatggtgcactctcagtacaatctgctctgatgccgcatagttaagccagtatacactccgctatc


gctacgtgactgggtcatggctgcgccccgacacccgccaacacccgctgacgcgccctgacgggcttgtctgctcccggcatccgctta


cagacaagctgtgaccgtctccgggagctgcatgtgtcagaggttttcaccgtcatcaccgaaacgcgcgaggcagctgcggtaaagctc


atcagcgtggtcgtgaagcgattcacagatgtctgcctgttcatccgcgtccagctcgttgagtttctccagaagcgttaatgtctggcttctg


ataaagcgggccatgttaagggcggttttttcctgtttggtcactgatgcctccgtgtaagggggatttctgttcatgggggtaatgataccgat


gaaacgagagaggatgctcacgatacgggttactgatgatgaacatgcccggttactggaacgttgtgagggtaaacaactggcggtatg


gatgcggcgggaccagagaaaaatcactcagggtcaatgccagcgcttcgttaatacagatgtaggtgttccacagggtagccagcagc


atcctgcgatgcagatccggaacataatggtgcagggcgctgacttccgcgtttccagactttacgaaacacggaaaccgaagaccattca


tgttgttgctcaggtcgcagacgttttgcagcagcagtcgcttcacgttcgctcgcgtatcggtgattcattctgctaaccagtaaggcaaccc


cgccagcctagccgggtcctcaacgacaggagcacgatcatgcgcacccgtggggccgccatgccggcgataatggcctgcttctcgc


cgaaacgtttggtggcgggaccagtgacgaaggcttgagcgagggcgtgcaagattccgaataccgcaagcgacaggccgatcatcgt


cgcgctccagcgaaagcggtcctcgccgaaaatgacccagagcgctgccggcacctgtcctacgagttgcatgataaagaagacagtca


taagtgcggcgacgatagtcatgccccgcgcccaccggaaggagctgactgggttgaaggctctcaagggcatcggtcgagatcccgg


tgcctaatgagtgagctaacttacattaattgcgttgcgctcactgcccgctttccagtcgggaaacctgtcgtgccagctgcattaatgaatc


ggccaacgcgcggggagaggcggtttgcgtattgggcgccagggtggtttttcttttcaccagtgagacgggcaacagctgattgcccttc


accgcctggccctgagagagttgcagcaagcggtccacgctggtttgccccagcaggcgaaaatcctgtttgatggtggttaacggcggg


atataacatgagctgtcttcggtatcgtcgtatcccactaccgagatatccgcaccaacgcgcagcccggactcggtaatggcgcgcattg


cgcccagcgccatctgatcgttggcaaccagcatcgcagtgggaacgatgccctcattcagcatttgcatggtttgttgaaaaccggacatg


gcactccagtcgccttcccgttccgctatcggctgaatttgattgcgagtgagatatttatgccagccagccagacgcagacgcgccgaga


cagaacttaatgggcccgctaacagcgcgatttgctggtgacccaatgcgaccagatgctccacgcccagtcgcgtaccgtcttcatggg


agaaaataatactgttgatgggtgtctggtcagagacatcaagaaataacgccggaacattagtgcaggcagcttccacagcaatggcatc


ctggtcatccagcggatagttaatgatcagcccactgacgcgttgcgcgagaagattgtgcaccgccgctttacaggcttcgacgccgctt


cgttctaccatcgacaccaccacgctggcacccagttgatcggcgcgagatttaatcgccgcgacaatttgcgacggcgcgtgcagggcc


agactggaggtggcaacgccaatcagcaacgactgtttgcccgccagttgttgtgccacgcggttgggaatgtaattcagctccgccatcg


ccgcttccactttttcccgcgttttcgcagaaacgtggctggcctggttcaccacgcgggaaacggtctgataagagacaccggcatactct


gcgacatcgtataacgttactggtttcacattcaccaccctgaattgactctcttccgggcgctatcatgccataccgcgaaaggttttgcgcc


attcgatggtgtccgggatctcgacgctctcccttatgcgactcctgcattaggaagcagcccagtagtaggttgaggccgttgagcaccgc


cgccgcaaggaatggtgcatgcaaggagatggcgcccaacagtcccccggccacggggcctgccaccatacccacgccgaaacaag


cgctcatgagcccgaagtggcgagcccgatcttccccatcggtgatgtcggcgatataggcgccagcaaccgcacctgtggcgccggtg


atgccggccacgatgcgtccggcgtagaggatcg



25
agatctcgatcccgcgaaattaatacgactcactataggggaattgtgagcggataacaattcccctctagaaataattttgtttaactttaaga
Endo-β-


aggagatataCATATGGTACCAAACAAAAGCGTAGCACCATTATTACTTGCTGCATCTAT
glucanase


CTTATATGGTGGTGCTGTTGCTCAACAGACTGTTTGGGGTCAGTGTGGTGGTATTGG
insertion cassette


TTGGTCTGGTCCTACCAATTGTGCTCCTGGCTCAGCATGTAGTACCTTAAATCCTTA
(pET-21a-BD05)


CTATGCTCAATGTATTCCAGGTGCAACAACTATAACAACATCAACTCGCCCTCCTTC


AGGTCCAACTACAACAACTCGTGCTACTAGCACTTCTAGCAGCACACCTCCTACATC


TTCTGGAGTACGTTTCGCTGGTGTTAATATTGCAGGTTTCGATTTTGGTTGTACTACC


GATGGTACATGTGTTACCAGTAAAGTTTATCCCCCTTTAAAAAATTTTACTGGCTCA


AACAATTATCCAGATGGCATTGGTCAAATGCAACACTTTGTAAATGAAGATGGTAT


GACTATTTTCCGTTTACCAGTGGGCTGGCAATACTTAGTTAACAACAATTTAGGTGG


TAACTTAGATAGTACATCAATTAGTAAATATGATCAATTAGTACAAGGTTGCTTATC


TTTAGGTGCCTATTGTATTGTTGATATTCATAATTATGCCCGTTGGAACGGTGGTATT


ATTGGTCAAGGTGGTCCAACTAATGCTCAATTTACATCATTATGGAGCCAATTAGCT


TCAAAATATGCTAGTCAATCACGTGTTTGGTTCGGTATTATGAATGAACCTCACGAT


GTGAACATAAATACTTGGGCTGCAACTGTGCAAGAAGTAGTAACTGCTATTCGTAA


TGCTGGTGCAACATCACAATTCATTAGTTTACCAGGCAACGATTGGCAATCTGCCGG


CGCTTTTATTTCTGACGGTAGCGCAGCTGCTCTTAGTCAAGTGACTAACCCAGACGG


TAGTACCACTAACTTAATATTCGATGTACATAAATATCTTGATTCTGATAATAGCGG


AACACACGCCGAATGTACCACAAATAATATTGATGGTGCTTTTAGTCCTTTAGCAAC


TTGGTTACGTCAAAATAATCGCCAAGCCATTTTAACTGAAACAGGTGGTGGAAACG


TGCAGAGTTGTATCCAAGACATGTGTCAACAAATTCAGTACTTAAATCAAAACTCT


GACGTGTACTTAGGTTATGTAGGTTGGGGTGCTGGTTCTTTTGATTCAACTTATGTA


TTAACCGAAACCCCTACTTCTTCTGGAAACTCATGGACAGACACTTCATTAGTAAGT


AGTTGTTTAGCTCGCAAGGGTACCGGTGAAAACTTATACTTTCAAGGCTCAGGTGG


CGGTGGAAGTGATTACAAAGATGATGATGATAAAGGAACCGGTTAATCTAGACTCG


AGcaccaccaccaccaccactgagatccggctgctaacaaagcccgaaaggaagctgagttggctgctgccaccgctgagcaataact


agcataaccccttggggcctctaaacgggtcttgaggggttttttgctgaaaggaggaactatatccggattggcgaatgggacgcgccct


gtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctt


tcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacc


tcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgtt


ctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctatt


ggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgtttacaatttcaggtggcacttttcggggaaatgtgc


gcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaag


gaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaa


gtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccga


agaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccg


catacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgc


tgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgg


gggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgcagca


atggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagt


tgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgc


agcactggggccagatggtaagccctcccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagat


cgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaa


aaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaag


atcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccgga


tcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggcca


ccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttacc


gggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaa


cgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggt


aagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacc


tctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggcc


ttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccg


cagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgcctgatgcggtattttctccttacgcatctgtgcggta


tttcacaccgcatatatggtgcactctcagtacaatctgctctgatgccgcatagttaagccagtatacactccgctatcgctacgtgactggg


tcatggctgcgccccgacacccgccaacacccgctgacgcgccctgacgggcttgtctgctcccggcatccgcttacagacaagctgtg


accgtctccgggagctgcatgtgtcagaggttttcaccgtcatcaccgaaacgcgcgaggcagctgcggtaaagctcatcagcgtggtcg


tgaagcgattcacagatgtctgcctgttcatccgcgtccagctcgttgagtttctccagaagcgttaatgtctggcttctgataaagcgggcca


tgttaagggcggttttttcctgtttggtcactgatgcctccgtgtaagggggatttctgttcatgggggtaatgataccgatgaaacgagagag


gatgctcacgatacgggttactgatgatgaacatgcccggttactggaacgttgtgagggtaaacaactggcggtatggatgcggcggga


ccagagaaaaatcactcagggtcaatgccagcgcttcgttaatacagatgtaggtgttccacagggtagccagcagcatcctgcgatgca


gatccggaacataatggtgcagggcgctgacttccgcgtttccagactttacgaaacacggaaaccgaagaccattcatgttgttgctcagg


tcgcagacgttttgcagcagcagtcgcttcacgttcgctcgcgtatcggtgattcattctgctaaccagtaaggcaaccccgccagcctagc


cgggtcctcaacgacaggagcacgatcatgcgcacccgtggggccgccatgccggcgataatggcctgcttctcgccgaaacgtttggt


ggcgggaccagtgacgaaggcttgagcgagggcgtgcaagattccgaataccgcaagcgacaggccgatcatcgtcgcgctccagcg


aaagcggtcctcgccgaaaatgacccagagcgctgccggcacctgtcctacgagttgcatgataaagaagacagtcataagtgcggcga


cgatagtcatgccccgcgcccaccggaaggagctgactgggttgaaggctctcaagggcatcggtcgagatcccggtgcctaatgagtg


agctaacttacattaattgcgttgcgctcactgcccgctttccagtcgggaaacctgtcgtgccagctgcattaatgaatcggccaacgcgcg


gggagaggcggtttgcgtattgggcgccagggtggtttttcttttcaccagtgagacgggcaacagctgattgcccttcaccgcctggccct


gagagagttgcagcaagcggtccacgctggtttgccccagcaggcgaaaatcctgtttgatggtggttaacggcgggatataacatgagc


tgtcttcggtatcgtcgtatcccactaccgagatatccgcaccaacgcgcagcccggactcggtaatggcgcgcattgcgcccagcgccat


ctgatcgttggcaaccagcatcgcagtgggaacgatgccctcattcagcatttgcatggtttgttgaaaaccggacatggcactccagtcgc


cttcccgttccgctatcggctgaatttgattgcgagtgagatatttatgccagccagccagacgcagacgcgccgagacagaacttaatgg


gcccgctaacagcgcgatttgctggtgacccaatgcgaccagatgctccacgcccagtcgcgtaccgtcttcatgggagaaaataatactg


ttgatgggtgtctggtcagagacatcaagaaataacgccggaacattagtgcaggcagcttccacagcaatggcatcctggtcatccagcg


gatagttaatgatcagcccactgacgcgttgcgcgagaagattgtgcaccgccgctttacaggcttcgacgccgcttcgttctaccatcgac


accaccacgctggcacccagttgatcggcgcgagatttaatcgccgcgacaatttgcgacggcgcgtgcagggccagactggaggtgg


caacgccaatcagcaacgactgtttgcccgccagttgttgtgccacgcggttgggaatgtaattcagctccgccatcgccgcttccacttttt


cccgcgttttcgcagaaacgtggctggcctggttcaccacgcgggaaacggtctgataagagacaccggcatactctgcgacatcgtata


acgttactggtttcacattcaccaccctgaattgactctcttccgggcgctatcatgccataccgcgaaaggttttgcgccattcgatggtgtcc


gggatctcgacgctctcccttatgcgactcctgcattaggaagcagcccagtagtaggttgaggccgttgagcaccgccgccgcaaggaa


tggtgcatgcaaggagatggcgcccaacagtcccccggccacggggcctgccaccatacccacgccgaaacaagcgctcatgagccc


gaagtggcgagcccgatcttccccatcggtgatgtcggcgatataggcgccagcaaccgcacctgtggcgccggtgatgccggccacg


atgcgtccggcgtagaggatcg



26
agatctcgatcccgcgaaattaatacgactcactataggggaattgtgagcggataacaattcccctctagaaataattttgtttaactttaaga
β-glucosidase


aggagatataCATATGGTACCATTACCAAAGGATTTCCAATGGGGTTTCGCTACCGCAGC
insertion


TTATCAAATTGAAGGTGCAGTTGATCAAGATGGACGTGGACCTTCTATTTGGGACA
cassette


CATTCTGTGCACAACCAGGTAAAATTGCTGATGGTTCATCAGGTGTAACAGCATGT
(pET-21a-


GACTCATATAATCGTACAGCTGAAGACATTGCACTTTTAAAATCTTTAGGTGCTAAA
BD09)


TCATATCGTTTCTCTATCTCATGGTCAAGAATTATTCCTGAAGGTGGCCGTGGTGAC


GCAGTAAATCAAGCTGGTATTGATCACTATGTTAAATTTGTAGATGACTTATTAGAC


GCAGGTATTACACCTTTTATCACTTTATTTCACTGGGATTTACCTGAAGGTTTACACC


AACGTTATGGTGGTCTTTTAAACCGTACAGAATTTCCTTTAGATTTCGAAAACTATG


CAAGAGTTATGTTTCGTGCACTTCCCAAAGTAAGAAACTGGATTACTTTTAATGAAC


CTTTATGTTCTGCTATTCCTGGTTATGGTTCAGGCACCTTTGCCCCAGGCAGACAAA


GTACAAGTGAGCCCTGGACAGTGGGCCATAACATTTTAGTAGCTCACGGTAGAGCT


GTAAAAGCATATAGAGATGATTTCAAACCTGCTTCAGGTGATGGTCAAATAGGTAT


TGTGTTAAATGGTGACTTCACATATCCCTGGGATGCCGCTGATCCTGCAGATAAAGA


AGCCGCTGAACGTCGCTTAGAATTTTTCACTGCTTGGTTTGCTGACCCCATCTATCTT


GGTGATTATCCTGCTTCAATGCGTAAACAATTAGGTGATCGTTTACCTACTTTTACA


CCAGAAGAACGTGCTTTAGTTCATGGTAGTAATGACTTTTATGGTATGAACCACTAT


ACTTCAAACTATATTCGTCACCGTAGCTCACCCGCAAGTGCTGATGACACAGTAGGT


AATGTAGATGTTTTATTTACTAATAAACAAGGTAATTGTATCGGTCCTGAAACACAG


AGCCCCTGGCTTCGTCCTTGTGCAGCTGGTTTCCGTGACTTCCTTGTATGGATAAGC


AAACGTTATGGTTATCCACCAATTTATGTTACAGAAAACGGAACATCAATAAAAGG


TGAAAGTGACTTACCAAAGGAAAAGATTCTTGAAGATGATTTTCGTGTTAAGTATT


ATAACGAATACATTAGAGCTATGGTTACAGCCGTTGAATTAGATGGTGTAAATGTA


AAAGGTTATTTCGCATGGTCTTTAATGGATAACTTTGAATGGGCTGATGGTTACGTT


ACACGTTTTGGTGTAACCTACGTTGATTACGAAAACGGCCAAAAACGTTTCCCTAA


AAAGAGTGCTAAAAGTTTAAAACCTTTATTTGATGAATTAATAGCTGCTGCAGGTA


CCGGTGAAAACTTATACTTTCAAGGCTCAGGTGGCGGTGGAAGTGATTACAAAGAT


GATGATGATAAAGGAACCGGTTAATCTAGACTCGAGcaccaccaccaccaccactgagatccggctg


ctaacaaagcccgaaaggaagctgagttggctgctgccaccgctgagcaataactagcataaccccttggggcctctaaacgggtcttga


ggggttttttgctgaaaggaggaactatatccggattggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggt


tacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccc


cgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcac


gtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaaca


ctcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgc


gaattttaacaaaatattaacgtttacaatttcaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaa


atatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgccctt


attcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagt


gggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctg


ctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactca


ccagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaact


tacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccg


gagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgcagcaatggcaacaacgttgcgcaaactattaactggcga


actacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctg


gctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatc


gtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggt


aactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcat


gaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcg


taatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactg


gcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatac


ctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataag


gcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgt


gagctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcac


gagggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtca


ggggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgt


tatcccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagt


gagcgaggaagcggaagagcgcctgatgcggtattttctccttacgcatctgtgcggtatttcacaccgcatatatggtgcactctcagtaca


atctgctctgatgccgcatagttaagccagtatacactccgctatcgctacgtgactgggtcatggctgcgccccgacacccgccaacacc


cgctgacgcgccctgacgggcttgtctgctcccggcatccgcttacagacaagctgtgaccgtctccgggagctgcatgtgtcagaggttt


tcaccgtcatcaccgaaacgcgcgaggcagctgcggtaaagctcatcagcgtggtcgtgaagcgattcacagatgtctgcctgttcatccg


cgtccagctcgttgagtttctccagaagcgttaatgtctggcttctgataaagcgggccatgttaagggcggttttttcctgtttggtcactgatg


cctccgtgtaagggggatttctgttcatgggggtaatgataccgatgaaacgagagaggatgctcacgatacgggttactgatgatgaacat


gcccggttactggaacgttgtgagggtaaacaactggcggtatggatgcggcgggaccagagaaaaatcactcagggtcaatgccagc


gcttcgttaatacagatgtaggtgttccacagggtagccagcagcatcctgcgatgcagatccggaacataatggtgcagggcgctgactt


ccgcgtttccagactttacgaaacacggaaaccgaagaccattcatgttgttgctcaggtcgcagacgttttgcagcagcagtcgcttcacgt


tcgctcgcgtatcggtgattcattctgctaaccagtaaggcaaccccgccagcctagccgggtcctcaacgacaggagcacgatcatgcg


cacccgtggggccgccatgccggcgataatggcctgcttctcgccgaaacgtttggtggcgggaccagtgacgaaggcttgagcgagg


gcgtgcaagattccgaataccgcaagcgacaggccgatcatcgtcgcgctccagcgaaagcggtcctcgccgaaaatgacccagagcg


ctgccggcacctgtcctacgagttgcatgataaagaagacagtcataagtgcggcgacgatagtcatgccccgcgcccaccggaaggag


ctgactgggttgaaggctctcaagggcatcggtcgagatcccggtgcctaatgagtgagctaacttacattaattgcgttgcgctcactgcc


cgctttccagtcgggaaacctgtcgtgccagctgcattaatgaatcggccaacgcgcggggagaggcggtttgcgtattgggcgccagg


gtggtttttcttttcaccagtgagacgggcaacagctgattgcccttcaccgcctggccctgagagagttgcagcaagcggtccacgctggt


ttgccccagcaggcgaaaatcctgtttgatggtggttaacggcgggatataacatgagctgtcttcggtatcgtcgtatcccactaccgagat


atccgcaccaacgcgcagcccggactcggtaatggcgcgcattgcgcccagcgccatctgatcgttggcaaccagcatcgcagtggga


acgatgccctcattcagcatttgcatggtttgttgaaaaccggacatggcactccagtcgccttcccgttccgctatcggctgaatttgattgc


gagtgagatatttatgccagccagccagacgcagacgcgccgagacagaacttaatgggcccgctaacagcgcgatttgctggtgaccc


aatgcgaccagatgctccacgcccagtcgcgtaccgtcttcatgggagaaaataatactgttgatgggtgtctggtcagagacatcaagaa


ataacgccggaacattagtgcaggcagcttccacagcaatggcatcctggtcatccagcggatagttaatgatcagcccactgacgcgttg


cgcgagaagattgtgcaccgccgctttacaggcttcgacgccgcttcgttctaccatcgacaccaccacgctggcacccagttgatcggcg


cgagatttaatcgccgcgacaatttgcgacggcgcgtgcagggccagactggaggtggcaacgccaatcagcaacgactgtttgcccgc


cagttgttgtgccacgcggttgggaatgtaattcagctccgccatcgccgcttccactttttcccgcgttttcgcagaaacgtggctggcctgg


ttcaccacgcgggaaacggtctgataagagacaccggcatactctgcgacatcgtataacgttactggtttcacattcaccaccctgaattga


ctctcttccgggcgctatcatgccataccgcgaaaggttttgcgccattcgatggtgtccgggatctcgacgctctcccttatgcgactcctgc


attaggaagcagcccagtagtaggttgaggccgttgagcaccgccgccgcaaggaatggtgcatgcaaggagatggcgcccaacagtc


ccccggccacggggcctgccaccatacccacgccgaaacaagcgctcatgagcccgaagtggcgagcccgatcttccccatcggtgat


gtcggcgatataggcgccagcaaccgcacctgtggcgccggtgatgccggccacgatgcgtccggcgtagaggatcg



27
agatctcgatcccgcgaaattaatacgactcactataggggaattgtgagcggataacaattcccctctagaaataattttgtttaactttaaga
Endo-


aggagatataCATATGGTACCAGTATCTTTCACAAGTCTTTTAGCAGCATCTCCACCTTCA
xylanase


CGTGCAAGTTGCCGTCCAGCTGCTGAAGTGGAATCAGTTGCAGTAGAAAAACGTCA
insertion


AACAATTCAACCAGGTACAGGTTACAATAACGGTTACTTTTATTCTTACTGGAATGA
cassette


TGGACACGGTGGTGTTACATATACTAATGGACCTGGTGGTCAATTTAGTGTAAATTG
(pET-21a-


GAGTAACTCAGGCAATTTTGTTGGAGGAAAAGGTTGGCAACCTGGTACAAAGAATA
BD11)


AGGTAATCAATTTCTCTGGTAGTTACAACCCTAATGGTAATTCTTATTTAAGTGTAT


ACGGTTGGAGCCGTAACCCATTAATTGAATATTATATTGTAGAGAACTTTGGTACAT


ACAACCCTTCAACAGGTGCTACTAAATTAGGTGAAGTTACTTCAGATGGATCAGTTT


ATGATATTTATCGTACTCAACGCGTAAATCAACCATCTATAATTGGAACTGCCACTT


TCTACCAATACTGGAGTGTAAGACGTAATCATCGTTCAAGTGGTAGTGTTAATACA


GCAAACCACTTTAATGCATGGGCTCAACAAGGTTTAACATTAGGTACAATGGACTA


TCAAATTGTAGCTGTTGAAGGTTATTTTTCATCAGGTAGTGCTTCTATCACTGTTAGC


GGTACCGGTGAAAACTTATACTTTCAAGGCTCAGGTGGCGGTGGAAGTGATTACAA


AGATGATGATGATAAAGGAACCGGTTAATCTAGACTCGAGcaccaccaccaccaccactgagatc


cggctgctaacaaagcccgaaaggaagctgagttggctgctgccaccgctgagcaataactagcataaccccttggggcctctaaacgg


gtcttgaggggttttttgctgaaaggaggaactatatccggattggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgt


ggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccgg


ctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgat


ggttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactgg


aacaacactcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaat


ttaacgcgaattttaacaaaatattaacgtttacaatttcaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaata


cattcaaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgt


cgcccttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgc


acgagtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaa


agttctgctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttga


gtactcaccagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcg


gccaacttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttg


ggaaccggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgcagcaatggcaacaacgttgcgcaaactatta


actggcgaactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggccct


tccggctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccct


cccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaa


gcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgat


aatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatccttttttt


ctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaag


gtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcc


tacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttacc


ggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacct


acagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggag


agcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgat


gctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttct


ttcctgcgttatcccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagc


gagtcagtgagcgaggaagcggaagagcgcctgatgcggtattttctccttacgcatctgtgcggtatttcacaccgcatatatggtgcact


ctcagtacaatctgctctgatgccgcatagttaagccagtatacactccgctatcgctacgtgactgggtcatggctgcgccccgacacccg


ccaacacccgctgacgcgccctgacgggcttgtctgctcccggcatccgcttacagacaagctgtgaccgtctccgggagctgcatgtgt


cagaggttttcaccgtcatcaccgaaacgcgcgaggcagctgcggtaaagctcatcagcgtggtcgtgaagcgattcacagatgtctgcct


gttcatccgcgtccagctcgttgagtttctccagaagcgttaatgtctggcttctgataaagcgggccatgttaagggcggttttttcctgtttgg


tcactgatgcctccgtgtaagggggatttctgttcatgggggtaatgataccgatgaaacgagagaggatgctcacgatacgggttactgat


gatgaacatgcccggttactggaacgttgtgagggtaaacaactggcggtatggatgcggcgggaccagagaaaaatcactcagggtca


atgccagcgcttcgttaatacagatgtaggtgttccacagggtagccagcagcatcctgcgatgcagatccggaacataatggtgcaggg


cgctgacttccgcgtttccagactttacgaaacacggaaaccgaagaccattcatgttgttgctcaggtcgcagacgttttgcagcagcagtc


gcttcacgttcgctcgcgtatcggtgattcattctgctaaccagtaaggcaaccccgccagcctagccgggtcctcaacgacaggagcacg


atcatgcgcacccgtggggccgccatgccggcgataatggcctgcttctcgccgaaacgtttggtggcgggaccagtgacgaaggcttg


agcgagggcgtgcaagattccgaataccgcaagcgacaggccgatcatcgtcgcgctccagcgaaagcggtcctcgccgaaaatgacc


cagagcgctgccggcacctgtcctacgagttgcatgataaagaagacagtcataagtgcggcgacgatagtcatgccccgcgcccaccg


gaaggagctgactgggttgaaggctctcaagggcatcggtcgagatcccggtgcctaatgagtgagctaacttacattaattgcgttgcgct


cactgcccgctttccagtcgggaaacctgtcgtgccagctgcattaatgaatcggccaacgcgcggggagaggcggtttgcgtattgggc


gccagggtggtttttcttttcaccagtgagacgggcaacagctgattgcccttcaccgcctggccctgagagagttgcagcaagcggtcca


cgctggtttgccccagcaggcgaaaatcctgtttgatggtggttaacggcgggatataacatgagctgtcttcggtatcgtcgtatcccacta


ccgagatatccgcaccaacgcgcagcccggactcggtaatggcgcgcattgcgcccagcgccatctgatcgttggcaaccagcatcgca


gtgggaacgatgccctcattcagcatttgcatggtttgttgaaaaccggacatggcactccagtcgccttcccgttccgctatcggctgaattt


gattgcgagtgagatatttatgccagccagccagacgcagacgcgccgagacagaacttaatgggcccgctaacagcgcgatttgctggt


gacccaatgcgaccagatgctccacgcccagtcgcgtaccgtcttcatgggagaaaataatactgttgatgggtgtctggtcagagacatc


aagaaataacgccggaacattagtgcaggcagcttccacagcaatggcatcctggtcatccagcggatagttaatgatcagcccactgac


gcgttgcgcgagaagattgtgcaccgccgctttacaggcttcgacgccgcttcgttctaccatcgacaccaccacgctggcacccagttga


tcggcgcgagatttaatcgccgcgacaatttgcgacggcgcgtgcagggccagactggaggtggcaacgccaatcagcaacgactgttt


gcccgccagttgttgtgccacgcggttgggaatgtaattcagctccgccatcgccgcttccactttttcccgcgttttcgcagaaacgtggct


ggcctggttcaccacgcgggaaacggtctgataagagacaccggcatactctgcgacatcgtataacgttactggtttcacattcaccaccc


tgaattgactctcttccgggcgctatcatgccataccgcgaaaggttttgcgccattcgatggtgtccgggatctcgacgctctcccttatgcg


actcctgcattaggaagcagcccagtagtaggttgaggccgttgagcaccgccgccgcaaggaatggtgcatgcaaggagatggcgcc


caacagtcccccggccacggggcctgccaccatacccacgccgaaacaagcgctcatgagcccgaagtggcgagcccgatcttcccc


atcggtgatgtcggcgatataggcgccagcaaccgcacctgtggcgccggtgatgccggccacgatgcgtccggcgtagaggatcg



28
GTGCACTCTCAGTACAATCTGCTCTGATGCCGCATAGTTAAGCCAGCCCCGACACCC
Endo-β-


GCCAACACCCGCTGACGCGCCCTGACGGGCTTGTCTGCTCCCGGCATCCGCTTACA
glucanase


GACAAGCTGTGACCGTCTCCGGGAGCTGCATGTGTCAGAGGTTTTCACCGTCATCAC
insertion


CGAAACGCGCGAGACGAAAGGGCCTCGTGATACGCCTATTTTTATAGGTTAATGTC
cassette


ATGATAATAATGGTTTCTTAGACGTCAGGTGGCACTTTTCGGGGAAATGTGCGCGG
(pSE-3HB-


AACCCCTATTTGTTTATTTTTCTAAATACATTCAAATATGTATCCGCTCATGAGACA
K-rbcL:


ATAACCCTGATAAATGCTTCAATAATATTGAAAAAGGAAGAGTATGAGTATTCAAC
BD05)


ATTTCCGTGTCGCCCTTATTCCCTTTTTTGCGGCATTTTGCCTTCCTGTTTTTGCTCAC


CCAGAAACGCTGGTGAAAGTAAAAGATGCTGAAGATCAGTTGGGTGCACGAGTGG


GTTACATCGAACTGGATCTCAACAGCGGTAAGATCCTTGAGAGTTTTCGCCCCGAA


GAACGTTTTCCAATGATGAGCACTTTTAAAGTTCTGCTATGTGGCGCGGTATTATCC


CGTATTGACGCCGGGCAAGAGCAACTCGGTCGCCGCATACACTATTCTCAGAATGA


CTTGGTTGAGTACTCACCAGTCACAGAAAAGCATCTTACGGATGGCATGACAGTAA


GAGAATTATGCAGTGCTGCCATAACCATGAGTGATAACACTGCGGCCAACTTACTT


CTGACAACGATCGGAGGACCGAAGGAGCTAACCGCTTTTTTGCACAACATGGGGGA


TCATGTAACTCGCCTTGATCGTTGGGAACCGGAGCTGAATGAAGCCATACCAAACG


ACGAGCGTGACACCACGATGCCTGTAGCAATGGCAACAACGTTGCGCAAACTATTA


ACTGGCGAACTACTTACTCTAGCTTCCCGGCAACAATTAATAGACTGGATGGAGGC


GGATAAAGTTGCAGGACCACTTCTGCGCTCGGCCCTTCCGGCTGGCTGGTTTATTGC


TGATAAATCTGGAGCCGGTGAGCGTGGGTCTCGCGGTATCATTGCAGCACTGGGGC


CAGATGGTAAGCCCTCCCGTATCGTAGTTATCTACACGACGGGGAGTCAGGCAACT


ATGGATGAACGAAATAGACAGATCGCTGAGATAGGTGCCTCACTGATTAAGCATTG


GTAACTGTCAGACCAAGTTTACTCATATATACTTTAGATTGATTTAAAACTTCATTTT


TAATTTAAAAGGATCTAGGTGAAGATCCTTTTTGATAATCTCATGACCAAAATCCCT


TAACGTGAGTTTTCGTTCCACTGAGCGTCAGACCCCGTAGAAAAGATCAAAGGATC


TTCTTGAGATCCTTTTTTTCTGCGCGTAATCTGCTGCTTGCAAACAAAAAAACCACC


GCTACCAGCGGTGGTTTGTTTGCCGGATCAAGAGCTACCAACTCTTTTTCCGAAGGT


AACTGGCTTCAGCAGAGCGCAGATACCAAATACTGTTCTTCTAGTGTAGCCGTAGTT


AGGCCACCACTTCAAGAACTCTGTAGCACCGCCTACATACCTCGCTCTGCTAATCCT


GTTACCAGTGGCTGCTGCCAGTGGCGATAAGTCGTGTCTTACCGGGTTGGACTCAA


GACGATAGTTACCGGATAAGGCGCAGCGGTCGGGCTGAACGGGGGGTTCGTGCAC


ACAGCCCAGCTTGGAGCGAACGACCTACACCGAACTGAGATACCTACAGCGTGAGC


TATGAGAAAGCGCCACGCTTCCCGAAGGGAGAAAGGCGGACAGGTATCCGGTAAG


CGGCAGGGTCGGAACAGGAGAGCGCACGAGGGAGCTTCCAGGGGGAAACGCCTGG


TATCTTTATAGTCCTGTCGGGTTTCGCCACCTCTGACTTGAGCGTCGATTTTTGTGAT


GCTCGTCAGGGGGGCGGAGCCTATGGAAAAACGCCAGCAACGCGGCCTTTTTACGG


TTCCTGGCCTTTTGCTGGCCTTTTGCTCACATGTTCTTTCCTGCGTTATCCCCTGATTC


TGTGGATAACCGTATTACCGCCTTTGAGTGAGCTGATACCGCTCGCCGCAGCCGAA


CGACCGAGCGCAGCGAGTCAGTGAGCGAGGAAGCGGAAGAGCGCCCAATACGCAA


ACCGCCTCTCCCCGCGCGTTGGCCGATTCATTAATGCAGCTGGCACGACAGGTTTCC


CGACTGGAAAGCGGGCAGTGAGCGCAACGCAATTAATGTGAGTTAGCTCACTCATT


AGGCACCCCAGGCTTTACACTTTATGCTTCCGGCTCGTATGTTGTGTGGAATTGTGA


GCGGATAACAATTTCACACAGGAAACAGCTATGACCATGATTACGCCaagctcgcggccgc


agtactCTGCAGATTTTATGCAAAATTAAAGTCTTGTGACAACAGCTTTCTCCTTAAGTG


CAAATATCGCCCATTCTTTCCTCTTTTCGTATATAAATGCTGTAATAGTAGGATGTC


GTACCCGTAAAGGTACGACATTGAATATTAATATACTCCTAAGTTTACTTTCCCAAT


ATTTATATTAGGACGTCCCCTTCGGGTAAATAAATTTTAGTGGCAGTGGTACCGCCA


CTCCCTATTTTAATACTGCGAAGGAGGCAGTTGGCAGGCAACTCGTCGTTCGCAGTA


TATAAATATCCACTAATATTTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGG


GAAAGAAGCAGTCGCCTCCTTGCGAAAAGGTTTACTTGCCCGACCAGTGAAAAGCA


TGCTGTAAGATATAAATCTACCCTGAAAGGGATGCATTTCACCATAATACTATACA


AATGGTGTTACCCTTTGAGGATCATAACGGTGCTACTGGAATATATGGTCTCTTCAT


GGATAGACGATAGCCATTTATTTACCCATTAAGGGGACATTAGTGGCCTGTCACTGC


TCCTTACGAGACGCCAGTGGACGTTCGTCCTAGAAAATTTATGCGCTGCCTAGAAG


CCCCAAAAGGGAAGTTTACTGACTCGTTAGAGCGTGCGCTAACAGGTTTAAATACT


TCAATATGTATATTAGGACGCCGGTGGCAGTGGTACCGCCACTGCCACCGTCGGAG


GACGTCCCTTACGGTATATTATATACTAGGATTTTAATACTCCGAAGGAGGCAGTGG


CGGTACCACTGCCACTAATATTTATATTCCCGTAAGGGACGTCCTCCTTCGGAGTAT


GTAAACATTCTAAGTTTACTTGCCCAATATTTATATTAGGCAGTTGGCAGGCAACTG


CTAGCTCTCCTCCTTCGGAGTATGTAAACATCGCAGTATATAAATATCCACTAATAT


TTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGGGAAGGACGTCAGTGGCAG


TTGCCTGCCAACTGCCTAGGCAAGTAAACTTAGGAGTATATAAATATAGGCAGTCG


CGGTACCACTGCCACTGACGTCCTGCCAACTGCCTAGGCAAGTAAACTTAAGTGGC


ACTAAAATGCATTTGCCCGAAGGGGAAGGAGGACGCCAGTGGCAGTGGTACCGCC


ACTGCCTCCTTCGGAGTATTAAAATCCTAGTATGTAAATCTGCTAGCGCAGGAAATA


AATTTTATTCTATTTATATACTCCGTTAGGAGGTAAGTAAACCCCTTCCCCTTCGGG


ACGTCAGTGCAGTTGCCTGCCAACTGCCTAATATAAATATTAGACCACTAAAGTTTG


GCAACTGCCAACTGTTGTCCTTCGGAGGAAAAAAAATGGTTAACTCGCAAGCAGTT


AACATAACTAAAGTTTGTTACTTTACCGAAGACGTTTACCCTTTCTCGGTTAAGGAG


ACGGAGACAGTTGCACTGTGACTGCCTAGTATAGCAATTTTGTTTTTGTTTATATGC


TCGACAAAATGACTTTCATAAAAATATAAAGTAGTTAGCTAGTTATTTTATATCACT


ATAACTAGGGTTCTCAGAGGCACCGAAGTCACTTGTAAAAATAGTACTTTTTAACTT


GTTTAATCTTCGTGTTCTTCAAAAGGATCACGTAATTTTTTTGAAGGTGGACCAAAA


CTAACATAAACTGAATAGCCAGTTACACTTAACAGAAGAAACCATAAAAAAAAGG


TAAAGAAAAAAGCTGGACTTTCCATAGCTCATTTAATAATAAAATTATTCTCTTTTC


AACATATCTCTTAGATAGTTCAAAAGACTTGACGACTGTGTCCCACATTTTTAAACA


AAATTAATCTACTCAAAATTTTGCCCTGAGAAAGAATAACTTACTTCGTTTTTGCAG


TAGCCATTCATGTCACTTTGAAACTGTCCTTACAAAGTTAAACATTAATTAAAAATT


ATTTAATTTTTATATAACAAATATTATATTAAATAAAAAATGAACAAAGAACTTCTA


AGATCGTCTTTAGTGAGTAATTAAAGAGTTTTACTTACCAGACAAGGCAGTTTTTTC


ATTCTTTTAAAGCAGGCAGTTCTGAAGGGGAAAAGGGACTGCCTACTGCGGTCCTA


GGTAAATACATTTTTATGCAATTTATTTCTTGTGCTAGTAGGTTTCTATACTCACAAG


AAGCAACCCCTTGACGAGAGAACGTTATCCTCAGAGTATTTATAATCCTGAGAGGG


AATGCACTGAAGAATATTTTCCTTATTTTTTACAGAAAGTAAATAAAATAGCGCTAA


TAACGCTTAATTCATTTAATCAATTATGGCAACAGGAACTTCTAAAGCTAAACCATC


AAAAGTAAATTCAGACTTCCAAGAACCTGGTTTAGTTACACCATTAGGTACTTTATT


ACGTCCACTTAACTCAGAAGCAGGTAAAGTATTACCAGGCTGGGGTACAACTGTTT


TAATGGCTGTATTTATCCTTTTATTTGCAGCATTCTTATTAATCATTTTAGAAATTTA


CAACAGTTCTTTAATTTTAGATGACGTTTCTATGAGTTGGGAAACTTTAGCTAAAGT


TTCTTAATTTTATTTAACACAAACATAAAATATAAAACTGTTTGTTAAGGCTAGCTG


CTAAGTCTTCTTTTCGCTAAGGTAAACTAAGCAACTCAACCATATTTATATTCGGCA


GTGGCACCGCCAACTGCCACTGGCCTTCCGTTAAGATAAACGCGTggatctcacgtgACTA


GTcacctagtgtcgagtggtaccgccactgcctagtatataaatatcggcagttggcaggatatttatatactccgaaggaacttgttagcc


gataggcgaggcaactgccactaaaatttatttgcctcctaacggagcattaaaatccctaagtttacttgcccgtaaggggaaggggacgt


ccactaatatttatattaggcagttggcaggcaacaataaatacatttgtcccgtaaggggacgtcctgccaactgcctatggtagctattaag


tatatatatatgaaaagtgtgtataaactaaactaaaataaaccaggtatggttaaccagatttattttagtttaaaaaaaaattagttgtttgagct


agagttagttgaagctaagtctagaTTAACCGGTTCCTTTATCATCATCATCTTTGTAATCACTTCCA


CCGCCACCTGAGCCTTGAAAGTATAAGTTTTCACCGGTACCCTTGCGAGCTAAACA


ACTACTTACTAATGAAGTGTCTGTCCATGAGTTTCCAGAAGAAGTAGGGGTTTCGGT


TAATACATAAGTTGAATCAAAAGAACCAGCACCCCAACCTACATAACCTAAGTACA


CGTCAGAGTTTTGATTTAAGTACTGAATTTGTTGACACATGTCTTGGATACAACTCT


GCACGTTTCCACCACCTGTTTCAGTTAAAATGGCTTGGCGATTATTTTGACGTAACC


AAGTTGCTAAAGGACTAAAAGCACCATCAATATTATTTGTGGTACATTCGGCGTGT


GTTCCGCTATTATCAGAATCAAGATATTTATGTACATCGAATATTAAGTTAGTGGTA


CTACCGTCTGGGTTAGTCACTTGACTAAGAGCAGCTGCGCTACCGTCAGAAATAAA


AGCGCCGGCAGATTGCCAATCGTTGCCTGGTAAACTAATGAATTGTGATGTTGCAC


CAGCATTACGAATAGCAGTTACTACTTCTTGCACAGTTGCAGCCCAAGTATTTATGT


TCACATCGTGAGGTTCATTCATAATACCGAACCAAACACGTGATTGACTAGCATATT


TTGAAGCTAATTGGCTCCATAATGATGTAAATTGAGCATTAGTTGGACCACCTTGAC


CAATAATACCACCGTTCCAACGGGCATAATTATGAATATCAACAATACAATAGGCA


CCTAAAGATAAGCAACCTTGTACTAATTGATCATATTTACTAATTGATGTACTATCT


AAGTTACCACCTAAATTGTTGTTAACTAAGTATTGCCAGCCCACTGGTAAACGGAA


AATAGTCATACCATCTTCATTTACAAAGTGTTGCATTTGACCAATGCCATCTGGATA


ATTGTTTGAGCCAGTAAAATTTTTTAAAGGGGGATAAACTTTACTGGTAACACATGT


ACCATCGGTAGTACAACCAAAATCGAAACCTGCAATATTAACACCAGCGAAACGTA


CTCCAGAAGATGTAGGAGGTGTGCTGCTAGAAGTGCTAGTAGCACGAGTTGTTGTA


GTTGGACCTGAAGGAGGGCGAGTTTGATGTTGTTATAGTTGTTGCACCTGGAATACA


TTGAGCATAGTAAGGATTTAAGGTACTACATGCTGAGCCAGGAGCACAATTGGTAG


GACCAGACCAACCAATACCACCACACTGACCCCAAACAGTCTGTTGAGCAACAGCA


CCACCATATAAGATAGATGCAGCAAGTAATAATGGTGCTACGCTTTTGTTTGGTACC


ATatgcactttgcattacctccgtacaaattattttgatttctataaagttttgcttaaataaaaatttttaatttttaacgtccaccatataaataat


aaatatggtgaaacctttaacaacaaaaatcctcttgtaccatattaatccaaaagaattaaggacaaaagcttatctccaacatttttaaaaca


cagagtaaaaataatgttgtttttaagaatagaattttataacttgtattttaaatatgatctaatttatttgtgctaaaaattgcagttggaaagtaatt


ttaaaaataatttagatcatatttattaaataaagttgatttaaaacaacttaatcgtttttaattgttaattaaaaacataattttaaatctttttatattta


aattaccttatatactactaggtgACTATGgatatctacgtaatcgatgaattcgatcccatttttataactggatctcaaaatacctataaac


ccattgttcttctcttttagctctaagaacaatcaatttataaatatatttattattatgctataatataaatactatataaatacatttacctttttataaat


acatttaccttttttttaatttgcatgattttaatgcttatgctatcttttttatttagtccataaaacctttaaaggaccttttcttatgggatatttatatttt


cctaacaaagcaatcggcgtcataaactttagttgcttacgacgcctgtggacgtcccccccttccccttacgggcaagtaaacttagggatt


ttaatgcaataaataaatttgtcctcttcgggcaaatgaattttagtatttaaatatgacaagggtgaaccattacttttgttaacaagtgatcttac


cactcactatttttgttgaattttaaacttatttaaaattctcgaaagattttaaaaataaacttttttaatcttttatttattttttcttttttCGTAT


GGAATTGCCCAATATTATTCAACAATTTATCGGAAACAGCGTTTTAGAGCCAAATA


AAATTGGTCAGTCGCCATCGGATGTTTATTCTTTTAATCGAAATAATGAAACTTTTT


TTCTTAAGCGATCTAGCACTTTATATACAGAGACCACATACAGTGTCTCTCGTGAAG


CGAAAATGTTGAGTTGGCTCTCTGAGAAATTAAAGGTGCCTGAACTCATCATGACTT


TTCAGGATGAGCAGTTTGAATTTATGATCACTAAAGCGATCAATGCAAAACCAATT


TCAGCGCTTTTTTTAACAGACCAAGAATTGCTTGCTATCTATAAGGAGGCACTCAAT


CTGTTAAATTCAATTGCTATTATTGATTGTCCATTTATTTCAAACATTGATCATCGGT


TAAAAGAGTCAAAATTTTTTATTGATAACCAACTCCTTGACGATATAGATCAAGATG


ATTTTGACACTGAATTATGGGGAGACCATAAAACTTACCTAAGTCTATGGAATGAG


TTAACCGAGACTCGTGTTGAAGAAAGATTGGTTTTTTCTCATGGCGATATCACGGAT


AGTAATATTTTTATAGATAAATTCAATGAAATTTATTTTTTAGACCTTGGTCGTGCTG


GGTTAGCAGATGAATTTGTAGATATATCCTTTGTTGAACGTTGCCTAAGAGAGGATG


CATCGGAGGAAACTGCGAAAATATTTTTAAAGCATTTAAAAAATGATAGACCTGAC


AAAAGGAATTATTTTTTAAAACTTGATGAATTGAATTGAttccaagcattatctaaaatactctgcagg


cacgctagcttgtactcaagctcgtaacgaaggtcgtgaccttgctcgtgaaggtggcgacgtaattcgttcagcttgtaaatggtctccaga


acttgctgctgcatgtgaagtttggaaagaaattaaattcgatttgatactattgacaaactttaatttttatttttcatgatgtttatgaatagca


taaacatcgtttttatttttatggtgtttaggttaaatacctaaacatcattttacatttttaaaattaagttctaaagttatcttttgtttaaatttgcctgt


ctttatattacgatgtgccagaaaaataaaatcttagctttttattatagaatttatctttatgtattatattttataagttataataaaagaaatagta


acatactaaagcggatgtagcgcgtttatcttaacggaaggaattcggcgcctacgtacccgggtcgcgaggatccACGCGTTAA


TAGCTCACTTTTCTTTAAATTTAATTTTTAATTTAAAGGTGTAAGCAAATTGCCTGAC


GAGAGATCCACTTAAAGGATGACAGTGGCGGGCTACTGCCTACTTCCCTCCGGGAT


AAAATTTATTTGAAAAACGTTAGTTACTTCCTAACGGAGCATTGACATCCCCATATT


TATATTAGGACGTCCCCTTCGGGTAAATAAATTTTAGTGGACGTCCCCTTCGGGCAA


ATAAATTTTAGTGGACAATAAATAAATTTGTTGCCTGCCAACTGCCTAGGCAAGTA


AACTTGGGAGTATTAAAATAGGACGTCAGTGGCAGTTGCCTGCCAACTGCCTATAT


TTATATACTGCGAAGCAGGCAGTGGCGGTACCACTGCCACTGGCGTCCTAATATAA


ATATTGGGCAACTAAAGTTTATAGCAGTATTAACATCCTATATTTATATACTCCGAA


GGAACTTGTTAGCCGATAGGCGAGGCAACAAATTTATTTATTGTCCCGTAAAAGGA


TGCCTCCAGCATCGAAGGGGAAGGGGACGTCCTAGGCCATAAAACTAAAGGGAAA


TCCATAGTAACTGATGTTATAAATTTATAGACTCCAAAAAACAGCTGCGTTATAAAT


AACTTCTGTTAAATATGGCCAAGGGGACAGGGGCACTTTCAACTAAGTGTACATTA


AAAATTGACAATTCAATTTTTTTTAATTATAATATATATTTAGTAAAATATAACAAA


AAGCCCCCATCGTCTAGgtagaattccagctggcggccgccctatg



29
GTGCACTCTCAGTACAATCTGCTCTGATGCCGCATAGTTAAGCCAGCCCCGACACCC
Exo-β-


GCCAACACCCGCTGACGCGCCCTGACGGGCTTGTCTGCTCCCGGCATCCGCTTACA
glucanase


GACAAGCTGTGACCGTCTCCGGGAGCTGCATGTGTCAGAGGTTTTCACCGTCATCAC
insertion


CGAAACGCGCGAGACGAAAGGGCCTCGTGATACGCCTATTTTTATAGGTTAATGTC
cassette


ATGATAATAATGGTTTCTTAGACGTCAGGTGGCACTTTTCGGGGAAATGTGCGCGG
(pSE-3HB-


AACCCCTATTTGTTTATTTTTCTAAATACATTTCAAATATGTATCCGCTCATGAGACA
K-tD2:


ATAACCCTGATAAATGCTTCAATAATATTGAAAAAGGAAGAGTATGAGTATTCAAC
BD01)


ATTTCCGTGTCGCCCTTATTCCCTTTTTTGCGGCATTTTGCCTTCCTGTTTTTGCTCAC


CCAGAAACGCTGGTGAAAGTAAAAGATGCTGAAGATCAGTTGGGTGCACGAGTGG


GTTACATCGAACTGGATCTCAACAGCGGTAAGATCCTTGAGAGTTTTCGCCCCGAA


GAACGTTTTCCAATGATGAGCACTTTTAAAGTTCTGCTATGTGGCGCGGTATTATCC


CGTATTGACGCCGGGCAAGAGCAACTCGGTCGCCGCATACACTATTCTCAGAATGA


CTTGGTTGAGTACTCACCAGTCACAGAAAAGCATCTTACGGATGGCATGACAGTAA


GAGAATTATGCAGTGCTGCCATAACCATGAGTGATAACACTGCGGCCAACTTACTT


CTGACAACGATCGGAGGACCGAAGGAGCTAACCGCTTTTTTGCACAACATGGGGGA


TCATGTAACTCGCCTTGATCGTTGGGAACCGGAGCTGAATGAAGCCATACCAAACG


ACGAGCGTGACACCACGATGCCTGTAGCAATGGCAACAACGTTGCGCAAACTATTA


ACTGGCGAACTACTTACTCTAGCTTCCCGGCAACAATTAATAGACTGGATGGAGGC


GGATAAAGTTGCAGGACCACTTCTGCGCTCGGCCCTTCCGGCTGGCTGGTTTATTGC


TGATAAATCTGGAGCCGGTGAGCGTGGGTCTCGCGGTATCATTGCAGCACTGGGGC


CAGATGGTAAGCCCTCCCGTATCGTAGTTATCTACACGACGGGGAGTCAGGCAACT


ATGGATGAACGAAATAGACAGATCGCTGAGATAGGTGCCTCACTGATTAAGCATTG


GTAACTGTCAGACCAAGTTTACTCATATATACTTTAGATTGATTTAAAACTTCATTTT


TAATTTAAAAGGATCTAGGTGAAGATCCTTTTTGATAATCTCATGACCAAAATCCCT


TAACGTGAGTTTTCGTTCCACTGAGCGTCAGACCCCGTAGAAAAGATCAAAGGATC


TTCTTGAGATCCTTTTTTTCTGCGCGTAATCTGCTGCTTGCAAACAAAAAAACCACC


GCTACCAGCGGTGGTTTGTTTGCCGGATCAAGAGCTACCAACTCTTTTTCCGAAGGT


AACTGGCTTCAGCAGAGCGCAGATACCAAATACTGTTCTTCTAGTGTAGCCGTAGTT


AGGCCACCACTTCAAGAACTCTGTAGCACCGCCTACATACCTCGCTCTGCTAATCCT


GTTACCAGTGGCTGCTGCCAGTGGCGATAAGTCGTGTCTTACCGGGTTGGACTCAA


GACGATAGTTACCGGATAAGGCGCAGCGGTCGGGCTGAACGGGGGGTTCGTGCAC


ACAGCCCAGCTTGGAGCGAACGACCTACACCGAACTGAGATACCTACAGCGTGAGC


TATGAGAAAGCGCCACGCTTCCCGAAGGGAGAAAGGCGGACAGGTATCCGGTAAG


CGGCAGGGTCGGAACAGGAGAGCGCACGAGGGAGCTTCCAGGGGGAAACGCCTGG


TATCTTTATAGTCCTGTCGGGTTTCGCCACCTCTGACTTGAGCGTCGATTTTTGTGAT


GCTCGTCAGGGGGGCGGAGCCTATGGAAAAACGCCAGCAACGCGGCCTTTTTACGG


TTCCTGGCCTTTTGCTGGCCTTTTGCTCACATGTTCTTTCCTGCGTTATCCCCTGATTC


TGTGGATAACCGTATTACCGCCTTTGAGTGAGCTGATACCGCTCGCCGCAGCCGAA


CGACCGAGCGCAGCGAGTCAGTGAGCGAGGAAGCGGAAGAGCGCCCAATACGCAA


ACCGCCTCTCCCCGCGCGTTGGCCGATTCATTAATGCAGCTGGCACGACAGGTTTCC


CGACTGGAAAGCGGGCAGTGAGCGCAACGCAATTAATGTGAGTTAGCTCACTCATT


AGGCACCCCAGGCTTTACACTTTATGCTTCCGGCTCGTATGTTGTGTGGAATTGTGA


GCGGATAACAATTTCACACAGGAAACAGCTATGACCATGATTACGCCaagctcgcggccgc


agtactCTGCAGATTTTATGCAAAATTAAAGTCTTGTGACAACAGCTTTCTCCTTAAGTG


CAAATATCGCCCATTCTTTCCTCTTTTCGTATATAAATGCTGTAATAGTAGGATGTC


GTACCCGTAAAGGTACGACATTGAATATTAATATACTCCTAAGTTTACTTTCCCAAT


ATTTATATTAGGACGTCCCCTTCGGGTAAATAAATTTTAGTGGCAGTGGTACCGCCA


CTCCCTATTTTAATACTGCGAAGGAGGCAGTTGGCAGGCAACTCGTCGTTCGCAGTA


TATAAATATCCACTAATATTTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGG


GAAAGAAGCAGTCGCCTCCTTGCGAAAAGGTTTACTTGCCCGACCAGTGAAAAGCA


TGCTGTAAGATATAAATCTACCCTGAAAGGGATGCATTTCACCATAATACTATACA


AATGGTGTTACCCTTTGAGGATCATAACGGTGCTACTGGAATATATGGTCTCTTCAT


GGATAGACGATAGCCATTTATTTACCCATTAAGGGGACATTAGTGGCCTGTCACTGC


TCCTTACGAGACGCCAGTGGACGTTCGTCCTAGAAAATTTATGCGCTGCCTAGAAG


CCCCAAAAGGGAAGTTTACTGACTGGTTAGAGCGTGCGCTAACAGGTTTAAATACT


TCAATATGTATATTAGGACGCCGGTGGCAGTGGTACCGCCACTGCCACCGTCGGAG


GACGTCCCTTACGGTATATTATATACTAGGATTTTAATACTCCGAAGGAGGCAGTGG


CGGTACCACTGCCACTAATATTTATATTCCCGTAAGGGACGTCCTCCTTCGGAGTAT


GTAAACATTCTAAGTTTACTTGCCCAATATTTATATTAGGCAGTTGGCAGGCAACTG


CTAGCTCTCCTCCTTCGGAGTATGTAAACATCGCAGTATATAAATATCCACTAATAT


TTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGGGAAGGACGTCAGTGGCAG


TTGCCTGCCAACTGCCTAGGCAAGTAAACTTAGGAGTATATAAATATAGGCAGTCG


CGGTACCACTGCCACTGACGTCCTGCCAACTGCCTAGGCAAGTAAACTTAAGTGGC


ACTAAAATGCATTTGCCCGAAGGGGAAGGAGGACGCCAGTGGCAGTGGTACCGCC


ACTGCCTCCTTCGGAGTATTAAAATCCTAGTATGTAAATCTGCTAGCGCAGGAAATA


AATTTTATTCTATTTATATACTCCGTTAGGAGGTAAGTAAACCCCTTCCCCTTCGGG


ACGTCAGTGCAGTTGCCTGCCAACTGCCTAATATAAATATTAGACCACTAAAGTTTG


GCAACTGCCAACTGTTGTCCTTCGGAGGAAAAAAAATGGTTAACTCGCAAGCAGTT


AACATAACTAAAGTTTGTTACTTTACCGAAGACGTTTACCCTTTCTCGGTTAAGGAG


ACGGAGACAGTTGCACTGTGACTGCCTAGTATAGCAATTTTGTTTTTGTTTATATGC


TCGACAAAATGACTTTCATAAAAATATAAAGTAGTTAGCTAGTTATTTTATATCACT


ATAACTAGGGTTCTCAGAGGCACCGAAGTCACTTGTAAAAATAGTACTTTTTAACTT


GTTTAATCTTCGTGTTCTTCAAAAGGATCACGTAATTTTTTTGAAGGTGGACCAAAA


CTAACATAAACTGAATAGCCAGTTACACTTAACAGAAGAAACCATAAAAAAAAGG


TAAAGAAAAAAGCTGGACTTTCCATAGCTCATTTAATAATAAAATTATTCTCTTTTC


AACATATCTCTTAGATAGTTCAAAAGACTTGACGACTGTGTCCCACATTTTTAAACA


AAATTAATCTACTCAAAATTTTGCCCTGAGAAAGAATAACTTACTTCGTTTTTGCAG


TAGCCATTCATGTCACTTTGAAACTGTCCTTACAAAGTTAAACATTAATTAAAAATT


ATTTAATTTTTATATAACAAATATTATATTAAATAAAAAATGAACAAAGAACTTCTA


AGATCGTCTTTAGTGAGTAATTAAAGAGTTTTACTTACCAGACAAGGCAGTTTTTTC


ATTCTTTTAAAGCAGGCAGTTCTGAAGGGGAAAAGGGACTGCCTACTGCGGTCCTA


GGTAAATACATTTTTATGCAATTTATTTCTTGTGCTAGTAGGTTTCTATACTCACAAG


AAGCAACCCCTTGACGAGAGAACGTTATCCTCAGAGTATTTATAATCCTGAGAGGG


AATGCACTGAAGAATATTTTCCTTATTTTTTACAGAAAGTAAATAAAATAGCGCTAA


TAACGCTTAATTCATTTAATCAATTATGGCAACAGGAACTTCTAAAGCTAAACCATC


AAAAGTAAATTCAGACTTCCAAGAACCTGGTTTAGTTACACCATTAGGTACTTTATT


ACGTCCACTTAACTCAGAAGCAGGTAAAGTATTACCAGGCTGGGGTACAACTGTTT


TAATGGCTGTATTTATCCTTTTATTTGCAGCATTCTTATTAATCATTTTAGAAATTTA


CAACAGTTCTTTAATTTTAGATGACGTTTCTATGAGTTGGGAAACTTTAGCTAAAGT


TTCTTAATTTTATTTAACACAAACATAAAATATAAAACTGTTTGTTAAGGCTAGCTG


CTAAGTCTTCTTTTCGCTAAGGTAAACTAAGCAACTCAACCATATTTATATTCGGCA


GTGGCACCGCCAACTGCCACTGGCCTTCCGTTAAGATAAACGCGTggatctcacgtgACTA


GTgtcgagtggtaccgccactgcctagtatataaatatcggcagttggcaggatatttatatactccgaaggaacttgttagccgataggcg


aggcaactgccactaaaatttatttgcctcctaacggagcattaaaatccctaagtttacttgcccgtaaggggaaggggacgtccactaata


tttatattaggcagttggcaggcaacaataaatacatttgtcccgtaaggggacgtcctgccaactgcctatggtagctattaagtatatatata


tgaaaagtgtgtataaactaaactaaaataaaccaggtatggttaaccagatttattttagtttaaaaaaaaattagttgtttgagctagagttagt


tgaagctaagtctagaTTAACCGGTTCCTTTATCATCATCATCTTTGTAATCACTTCCACCGCC


ACCTGAGCCTTGAAAGTATAAGTTTTCACCGGTACCTAAACATTGGCTATAATATGG


ATTTAAAACTTGACATGTAGTTCCTGATGCACACACAGTTGGACCTGAATAACCAAT


ACCACCACATTGACCGTAATGAGATTGTGTTGGTCCAGGAGAAGAACCTGTGGTAG


TAGCAGGACGACGTGTTGTAGTGGTGCCAGGTGGATTTCCACCTGGTGGATTACCA


CCTGAAGGATCGCCTGTAGAGCCAATTGGACCAAATTTGATATTACTAAAAGTTAC


TTTTGCATTAGGACTTTGGCTTTCAACTTGAGCAGGTACACCACTTGAAGTTGAACA


TGAACCACGAACAGCACCAGGAGTGCTTGAAGTTTCGTTTGTAGGATATGTACTAT


CTAACCATAACATATTAGCATAATAGTCATCCCATAATGACATAACTAAAACCATA


CCACCTGATGTTGCTTTCTTGAATTGAGTTAAACCACCTTTATCTGAGAAGCTGCTA


CCACCAAATTCTGCTTCTTCTGCTGTACAATAATCGTCATTAAGGCCGTTACCAGAA


TAAGAACCTAATTCTGCATTTGGTTGTTGAAAAGTTACACCATTTTGCACGTAATAA


CGATTAATAGCACCGCTAGTTTCGAACTGTGTAACAACTGTTAACTTTTTAGTTGTA


TCTAATGTGAATGAACTTCCTGGTCCATAAAAAGATGTATTTCCTAAACGATATGGG


TCCCAATCGCAGCCATCAGGATCACATGTACCACCATAACGGTTATCACTGTATGTT


CCACCGCAACCGTCGCCTTCACAAATTTCTTGGCCAACGGTAGTACAAGGATGTGG


AGTTAATGCTTCACTAATTGAATTAGCTTCCCAAATATCCATTTCAGAACAACAAGA


TCCGTGACCACCAATTCCAGTATTTGCATTATTACTACTTGGTTCCCAACCTTCCACG


TTAGCTTGACCGTTAATAAACTTTAAATCACGAGGACACTGAGAATCACAATAGCC


TGTTCCGTATTTAGCACCTGCTGTATTAGTAGGATATTTGCTTACACCGCCATCAGC


GTCCATTGAAACGAAATAAAGAGCACCATTTAAACCACATGGTAATTGACTCACAT


CTACGTCGAAACTGAACTCATTACCTAATAATGTAAATTCTTGATAGGTTGTGTCAC


TTGCCATTAAGTATAAACGTGCGCCTACATTTTTTTGTGCTGATTGAGTCACGAAAC


CAATTGATAATGAGTTACCTGATGTAGTAACGCCGTAAGTTGAAGCGTAAGCTGCA


CCATCTAAACAACAATTTTTAGCACAAGTTTCGTTATCGGGACAAAGTGTTGATGAC


CAAGTATTACCGTCATAACAATTAGTTGAACTATTAGTGGCATGTGTCCAACGCCAG


TTAGCATCAATTACTACAGAGCCAGTTTGTTGTGTACAAGTACCTCCTGAAGAACAT


TTTTGCCATGTTAATGGAGGATGAGTTTCAGATTGTAAGGTACATGCTGACTGTGCA


CGAGCAGTAGCTAAGAAAGCACTAATAACAGCAAGTTTACGATATGGTACCATatgcg


tgtatctccaaaataaaaaaacaactcatcgttacgttaaatttattattatttaattttaatcattgtgtatttaatattataacttatataaaataaaatt


aaaaataagcattttttacacacatatttttaaataaatctttaaacgggttatatatagttatatatatgggactagaactgctttgtgcatagtcat


cacaattattatattataaaccatgaataaaggttttattattatgatataaaaatgcataaaatttttataaattttgcaagtaaaatatataattagg


aaaaaatttaaaatttaaaatgttagtcaagtttacaactaatacttttaattttgtattttaagtattggacatttttgtggaattaaatgtaccaaata


tccatttaatttcatACTAGTgatatctacgtaatcgatgaattcgatcccatttttataactggatctcaaaatacctataaacccattgttctt


ctcttttagctctaagaacaatcaatttataaatatatttattattatgctataatataaatactatataaatacatttacctttttataaatacatttacctt


ttttttaatttgcatgattttaatgcttatgctatcttttttatttagtccataaaacctttaaaggaccttttcttatgggatatttatattttcctaacaaa


gcaatcggcgtcataaactttagttgcttacgacgcctgtggacgtcccccccttccccttacgggcaagtaaacttagggattttaatgcaat


aaataaatttgtcctcttcgggcaaatgaattttagtatttaaatatgacaagggtgaaccattacttttgttaacaagtgatcttaccactcactat


ttttgttgaattttaaacttatttaaaattctcgagaaagattttaaaaataaacttttttaatcttttatttattttttcttttttCGTATGGAATT


GCCCAATATTATTCAACAATTTATCGGAAACAGCGTTTTAGAGCCAAATAAAATTG


GTCAGTCGCCATCGGATGTTTATTCTTTTAATCGAAATAATGAAACTTTTTTTCTTAA


GCGATCTAGCACTTTATATACAGAGACCACATACAGTGTCTCTCGTGAAGCGAAAA


TGTTGAGTTGGCTCTCTGAGAAATTAAAGGTGCCTGAACTCATCATGACTTTTCAGG


ATGAGCAGTTTGAATTTATGATCACTAAAGCGATCAATGCAAAACCAATTTCAGCG


CTTTTTTTAACAGACCAAGAATTGCTTGCTATCTATAAGGAGGCACTCAATCTGTTA


AATTCAATTGCTATTATTGATTGTCCATTTATTTCAAACATTGATCATCGGTTAAAA


GAGTCAAAATTTTTTATTGATAACCAACTCCTTGACGATATAGATCAAGATGATTTT


GACACTGAATTATGGGGAGACCATAAAACTTACCTAAGTCTATGGAATGAGTTAAC


CGAGACTCGTGTTGAAGAAAGATTGGTTTTTTCTCATGGCGATATCACGGATAGTAA


TATTTTTATAGATAAATTCAATGAAATTTATTTTTTAGACCTTGGTCGTGCTGGGTTA


GCAGATGAATTTGTAGATATATCCTTTGTTGAACGTTGCCTAAGAGAGGATGCATCG


GAGGAAACTGCGAAAATATTTTTAAAGCATTTAAAAAATGATAGACCTGACAAAAG


GAATTATTTTTTAAAACTTGATGAATTGAATTGAttccaagcattatctaaaatactctgcaggcacgctag


cttgtactcaagctcgtaacgaaggtcgtgaccttgctcgtgaaggtggcgacgtaattcgttcagcttgtaaatggtctccagaacttgctgc


tgcatgtgaagtttggaaagaaattaaattcgaatttgatactattgacaaactttaatttttatttttcatgatgtttatgtgaatagcataaacatcg


tttttatttttatggtgtttaggttaaatacctaaacatcattttacatttttaaaattaagttctaaagttatcttttgtttaaatttgcctgtctttataaatt


acgatgtgccagaaaaataaaatcttagctttttattatagaatttatctttatgtattatatttttataagttataataaaagaaatagtaacatactaa


agcggatgtagcgcgtttatcttaacggaaggaattcggcgcctacgtacccgggtcgcgaggatccACGCGTTAATAGCT


CACTTTTCTTTAAATTTAATTTTTAATTTAAAGGTGTAAGCAAATTGCCTGACGAGA


GATCCACTTAAAGGATGACAGTGGCGGGCTACTGCCTACTTCCCTCCGGGATAAAA


TTTATTTGAAAAACGTTAGTTACTTCCTAACGGAGCATTGACATCCCCATATTTATA


TTAGGACGTCCCCTTCGGGTAAATAAATTTTAGTGGACGTCCCCTTCGGGCAAATAA


ATTTTAGTGGACAATAAATAAATTTGTTGCCTGCCAACTGCCTAGGCAAGTAAACTT


GGGAGTATTAAAATAGGACGTCAGTGGCAGTTGCCTGCCAACTGCCTATATTTATAT


ACTGCGAAGCAGGCAGTGGCGGTACCACTGCCACTGGCGTCCTAATATAAATATTG


GGCAACTAAAGTTTATAGCAGTATTAACATCCTATATTTATATACTCCGAAGGAACT


TGTTAGCCGATAGGCGAGGCAACAAATTTATTTATTGTCCCGTAAAAGGATGCCTCC


AGCATCGAAGGGGAAGGGGACGTCCTAGGCCATAAAACTAAAGGGAAATCCATAG


TAACTGATGTTATAAATTTATAGACTCCAAAAAACAGCTGCGTTATAAATAACTTCT


GTTAAATATGGCCAAGGGGACAGGGGCACTTTCAACTAAGTGTACATTAAAAATTG


ACAATTCAATTTTTTTTAATTATAATATATATTTAGTAAAATATAACAAAAAGCCCC


CATCGTCTAGgtagaattccagctggcggccgccctatg



30
GTGCACTCTCAGTACAATCTGCTCTGATGCCGCATAGTTAAGCCAGCCCCGACACCC
Endo-β-


GCCAACACCCGCTGACGCGCCCTGACGGGCTTGTCTGCTCCCGGCATCCGCTTACA
glucanase


GACAAGCTGTGACCGTCTCCGGGAGCTGCATGTGTCAGAGGTTTTCACCGTCATCAC
insertion


CGAAACGCGCGAGACGAAAGGGCCTCGTGATACGCCTATTTTTATAGGTTAATGTC
cassette


ATGATAATAATGGTTTCTTAGACGTCAGGTGGCACTTTTCGGGGAAATGTGCGCGG
(pSE-3HB-


AACCCCTATTTGTTTATTTTTCTAAATACATTCAAATATGTATCCGCTCATGAGACA
K-tD2:


ATAACCCTGATAAATGCTTCAATAATATTGAAAAAGGAAGAGTATGAGTATTCAAC
BD05)


ATTTCCGTGTCGCCCTTATTCCCTTTTTTGCGGCATTTTGCCTTCCTGTTTTTGCTCAC


CCAGAAACGCTGGTGAAAGTAAAAGATGCTGAAGATCAGTTGGGTGCACGAGTGG


GTTACATCGAACTGGATCTCAACAGCGGTAAGATCCTTGAGAGTTTTCGCCCCGAA


GAACGTTTTCCAATGATGAGCACTTTTAAAGTTCTGCTATGTGGCGCGGTATTATCC


CGTATTGACGCCGGGCAAGAGCAACTCGGTCGCCGCATACACTATTCTCAGAATGA


CTTGGTTGAGTACTCACCAGTCACAGAAAAGCATCTTACGGATGGCATGACAGTAA


GAGAATTATGCAGTGCTGCCATAACCATGAGTGATAACACTGCGGCCAACTTACTT


CTGACAACGATCGGAGGACCGAAGGAGCTAACCGCTTTTTTGCACAACATGGGGGA


TCATGTAACTCGCCTTGATCGTTGGGAACCGGAGCTGAATGAAGCCATACCAAACG


ACGAGCGTGACACCACGATGCCTGTAGCAATGGCAACAACGTTGCGCAAACTATTA


ACTGGCGAACTACTTACTCTAGCTTCCCGGCAACAATTAATAGACTGGATGGAGGC


GGATAAAGTTGCAGGACCACTTCTGCGCTCGGCCCTTCCGGCTGGCTGGTTTATTGC


TGATAAATCTGGAGCCGGTGAGCGTGGGTCTCGCGGTATCATTGCAGCACTGGGGC


CAGATGGTAAGCCCTCCCGTATCGTAGTTATCTACACGACGGGGAGTCAGGCAACT


ATGGATGAACGAAATAGACAGATCGCTGAGATAGGTGCCTCACTGATTAAGCATTG


GTAACTGTCAGACCAAGTTTACTCATATATACTTTAGATTGATTTAAAACTTCATTTT


TAATTTAAAAGGATCTAGGTGAAGATCCTTTTTGATAATCTCATGACCAAAATCCCT


TAACGTGAGTTTTCGTTCCACTGAGCGTCAGACCCCGTAGAAAAGATCAAAGGATC


TTCTTGAGATCCTTTTTTTCTGCGCGTAATCTGCTGCTTGCAAACAAAAAAACCACC


GCTACCAGCGGTGGTTTGTTTGCCGGATCAAGAGCTACCAACTCTTTTTCCGAAGGT


AACTGGCTTCAGCAGAGCGCAGATACCAAATACTGTTCTTCTAGTGTAGCCGTAGTT


AGGCCACCACTTCAAGAACTCTGTAGCACCGCCTACATACCTCGCTCTGCTAATCCT


GTTACCAGTGGCTGCTGCCAGTGGCGATAAGTCGTGTCTTACCGGGTTGGACTCAA


GACGATAGTTACCGGATAAGGCGCAGCGGTCGGGCTGAACGGGGGGTTCGTGCAC


ACAGCCCAGCTTGGAGCGAACGACCTACACCGAACTGAGATACCTACAGCGTGAGC


TATGAGAAAGCGCCACGCTTCCCGAAGGGAGAAAGGCGGACAGGTATCCGGTAAG


CGGCAGGGTCGGAACAGGAGAGCGCACGAGGGAGCTTCCAGGGGGAAACGCCTGG


TATCTTTATAGTCCTGTCGGGTTTCGCCACCTCTGACTTGAGCGTCGATTTTTGTGAT


GCTCGTCAGGGGGGCGGAGCCTATGGAAAAACGCCAGCAACGCGGCCTTTTTACGG


TTCCTGGCCTTTTGCTGGCCTTTTGCTCACATGTTCTTTCCTGCGTTATCCCCTGATTC


TGTGGATAACCGTATTACCGCCTTTGAGTGAGCTGATACCGCTCGCCGCAGCCGAA


CGACCGAGCGCAGCGAGTCAGTGAGCGAGGAAGCGGAAGAGCGCCCAATACGCAA


ACCGCCTCTCCCCGCGCGTTGGCCGATTCATTAATGCAGCTGGCACGACAGGTTTCC


CGACTGGAAAGCGGGCAGTGAGCGCAACGCAATTAATGTGAGTTAGCTCACTCATT


AGGCACCCCAGGCTTTACACTTTATGCTTCCGGCTCGTATGTTGTGTGGAATTGTGA


GCGGATAACAATTTCACACAGGAAACAGCTATGACCATGATTACGCCaagctcgcggccgc


agtactCTGCAGATTTTATGCAAAATTAAAGTCTTGTGACAACAGCTTTCTCCTTAAGTG


CAAATATCGCCCATTCTTTCCTCTTTTCGTATATAAATGCTGTAATAGTAGGATGTC


GTACCCGTAAAGGTACGACATTGAATATTAATATACTCCTAAGTTTACTTTCCCAAT


ATTTATATTAGGACGTCCCCTTCGGGTAAATAAATTTTAGTGGCAGTGGTACCGCCA


CTCCCTATTTTAATACTGCGAAGGAGGCAGTTGGCAGGCAACTCGTCGTTCGCAGTA


TATAAATATCCACTAATATTTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGG


GAAAGAAGCAGTCGCCTCCTTGCGAAAAGGTTTACTTGCCCGACCAGTGAAAAGCA


TGCTGTAAGATATAAATCTACCCTGAAAGGGATGCATTTCACCATAATACTATACA


AATGGTGTTACCCTTTGAGGATCATAACGGTGCTACTGGAATATATGGTCTCTTCAT


GGATAGACGATAGCCATTTATTTACCCATTAAGGGGACATTAGTGGCCTGTCACTGC


TCCTTACGAGACGCCAGTGGACGTTCGTCCTAGAAAATTTATGCGCTGCCTAGAAG


CCCCAAAAGGGAAGTTTACTGACTCGTTAGAGCGTGCGCTAACAGGTTTAAATACT


TCAATATGTATATTAGGACGCCGGTGGCAGTGGTACCGCCACTGCCACCGTCGGAG


GACGTCCCTTACGGTATATTATATACTAGGATTTTAATACTCCGAAGGAGGCAGTGG


CGGTACCACTGCCACTAATATTTATATTCCCGTAAGGGACGTCCTCCTTCGGAGTAT


GTAAACATTCTAAGTTTACTTGCCCAATATTTATATTAGGCAGTTGGCAGGCAACTG


CTAGCTCTCCTCCTTCGGAGTATGTAAACATCGCAGTATATAAATATCCACTAATAT


TTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGGGAAGGACGTCAGTGGCAG


TTGCCTGCCAACTGCCTAGGCAAGTAAACTTAGGAGTATATAAATATAGGCAGTCG


CGGTACCACTGCCACTGACGTCCTGCCAACTGCCTAGGCAAGTAAACTTAAGTGGC


ACTAAAATGCATTTGCCCGAAGGGGAAGGAGGACGCCAGTGGCAGTGGTACCGCC


ACTGCCTCCTTCGGAGTATTAAAATCCTAGTATGTAAATCTGCTAGCGCAGGAAATA


AATTTTATTCTATTTATATACTCCGTTAGGAGGTAAGTAAACCCCTTCCCCTTCGGG


ACGTCAGTGCAGTTGCCTGCCAACTGCCTAATATAAATATTAGACCACTAAAGTTTG


GCAACTGCCAACTGTTGTCCTTCGGAGGAAAAAAAATGGTTAACTCGCAAGCAGTT


AACATAACTAAAGTTTGTTACTTTACCGAAGACGTTTACCCTTTCTCGGTTAAGGAG


ACGGAGACAGTTGCACTGTGACTGCCTAGTATAGCAATTTTGTTTTTGTTTATATGC


TCGACAAAATGACTTTCATAAAAATATAAAGTAGTTAGCTAGTTATTTTATATCACT


ATAACTAGGGTTCTCAGAGGCACCGAAGTCACTTGTAAAAATAGTACTTTTTAACTT


GTTTAATCTTCGTGTTCTTCAAAAGGATCACGTAATTTTTTTGAAGGTGGACCAAAA


CTAACATAAACTGAATAGCCAGTTACACTTAACAGAAGAAACCATAAAAAAAAGG


TAAAGAAAAAAGCTGGACTTTCCATAGCTCATTTAATAATAAAATTATTCTCTTTTC


AACATATCTCTTAGATAGTTCAAAAGACTTGACGACTGTGTCCCACATTTTTAAACA


AAATTAATCTACTCAAAATTTTGCCCTGAGAAAGAATAACTTACTTCGTTTTGCAG


TAGCCATTCATGTCACTTTGAAACTGTCCTTACAAAGTTAAACATTAATTAAAAATT


ATTTAATTTTTATATAACAAATATTATATTAAATAAAAAATGAACAAAGAACTTCTA


AGATCGTCTTTAGTGAGTAATTAAAGAGTTTTACTTACCAGACAAGGCAGTTTTTTC


ATTCTTTTAAAGCAGGCAGTTCTGAAGGGGAAAAGGGACTGCCTACTGCGGTCCTA


GGTAAATACATTTTTATGCAATTTATTTCTTGTGCTAGTAGGTTTCTATACTCACAAG


AAGCAACCCCTTGACGAGAGAACGTTATCCTCAGAGTATTTATAATCCTGAGAGGG


AATGCACTGAAGAATATTTTCCTTATTTTTTACAGAAAGTAAATAAAATAGCGCTAA


TAACGCTTAATTCATTTAATCAATTATGGCAACAGGAACTTCTAAAGCTAAACCATC


AAAAGTAAATTCAGACTTCCAAGAACCTGGTTTAGTTACACCATTAGGTACTTTATT


ACGTCCACTTAACTCAGAAGCAGGTAAAGTATTACCAGGCTGGGGTACAACTGTTT


TAATGGCTGTATTTATCCTTTTATTTGCAGCATTCTTATTAATCATTTTAGAAATTTA


CAACAGTTCTTTAATTTTAGATGACGTTTCTATGAGTTGGGAAACTTTAGCTAAAGT


TTCTTAATTTTATTTAACACAAACATAAAATATAAAACTGTTTGTTAAGGCTAGCTG


CTAAGTCTTCTTTTCGCTAAGGTAAACTAAGCAACTCAACCATATTTATATTCGGCA


GTGGCACCGCCAACTGCCACTGGCCTTCCGTTAAGATAAACGCGTggatctcacgtgACTA


GTgtcgagtggtaccgccactgcctagtatataaatatcggcagttggcaggatatttatatactccgaaggaacttgttagccgataggcg


aggcaactgccactaaaatttatttgcctcctaacggagcattaaaatccctaagtttacttgcccgtaaggggaaggggacgtccactaata


tttatattaggcagttggcaggcaacaataaatacatttgtcccgtaaggggacgtcctgccaactgcctatggtagctattaagtatatatata


tgaaaagtgtgtataaactaaactaaaataaaccaggtatggttaaccagatttattttagtttaaaaaaaaattagttgtttgagctagagttagt


tgaagctaagtctagaTTAACCGGTTCCTTTATCATCATCATCTTTGTAATCACTTCCACCGC


ACCTGAGCCTTGAAAGTATAAGTTTTCACCGGTACCCTTGCGAGCTAAACAACTACT


TACTAATGAAGTGTCTGTCCATGAGTTTCCAGAAGAAGTAGGGGTTTCGGTTAATAC


ATAAGTTGAATCAAAAGAACCAGCACCCCAACCTACATAACCTAAGTACACGTCAG


AGTTTTGATTTAAGTACTGAATTTGTTGACACATGTCTTGGATACAACTCTGCACGT


TTCCACCACCTGTTTCAGTTAAAATGGCTTGGCGATTATTTTGACGTAACCAAGTTG


CTAAAGGACTAAAAGCACCATCAATATTATTTGTGGTACATTCGGCGTGTGTTCCGC


TATTATCAGAATCAAGATATTTATGTACATCGAATATTAAGTTAGTGGTACTACCGT


CTGGGTTAGTCACTTGACTAAGAGCAGCTGCGCTACCGTCAGAAATAAAAGCGCCG


GCAGATTGCCAATCGTTGCCTGGTAAACTAATGAATTGTGATGTTGCACCAGCATTA


CGAATAGCAGTTACTACTTCTTGCACAGTTGCAGCCCAAGTATTTATGTTCACATCG


TGAGGTTCATTCATAATACCGAACCAAACACGTGATTGACTAGCATATTTTGAAGCT


AATTGGCTCCATAATGATGTAAATTGAGCATTAGTTGGACCACCTTGACCAATAATA


CCACCGTTCCAACGGGCATAATTATGAATATCAACAATACAATAGGCACCTAAAGA


TAAGCAACCTTGTACTAATTGATCATATTTACTAATTGATGTACTATCTAAGTTACC


ACCTAAATTGTTGTTAACTAAGTATTGCCAGCCCACTGGTAAACGGAAAATAGTCA


TACCATCTTCATTTACAAAGTGTTGCATTTGACCAATGCCATCTGGATAATTGTTTG


AGCCAGTAAAATTTTTTAAAGGGGGATAAACTTTACTGGTAACACATGTACCATCG


GTAGTACAACCAAAATCGAAACCTGCAATATTAACACCAGCGAAACGTACTCCAGA


AGATGTAGGAGGTGTGCTGCTAGAAGTGCTAGTAGCACGAGTTGTTGTAGTTGGAC


CTGAAGGAGGGCGAGTTGATGTTGTTATAGTTGTTGCACCTGGAATACATTGAGCA


TAGTAAGGATTTAAGGTACTACATGCTGAGCCAGGAGCACAATTGGTAGGACCAGA


CCAACCAATACCACCACACTGACCCCAAACAGTCTGTTGAGCAACAGCACCACCAT


ATAAGATAGATGCAGCAAGTAATAATGGTGCTACGCTTTTGTTTGGTACCATatgcgtgt


atctccaaaataaaaaaacaactcatcgttacgttaaatttattattatttaattttaatcattgtgtatttaatattataacttatataaaataaaattaa


aaataagcattttttacacacatatttttaaataaatctttaaacgggttatatatagttatatatatgggactagaactgctttgtgcatagtcatca


caattattatattataaaccatgaataaaggttttattattatgatataaaaatgcataaaatttttataaattttgcaagtaaaatatataattaggaa


aaaatttaaaatttaaaatgttagtcaagtttacaactaatacttttaattttgtattttaagtattggacattttgtggaattaaatgtaccaaatatc


catttaatttcatACTAGTgatatctacgtaatcgatgaattcgatcccatttttataactggatctcaaaatacctataaacccattgttcttct


cttttagctctaagaacaatcaatttataaatatatttattattatgctataatataaatactatataaatacatttacctttttataaatacatttacctttt


ttttaatttgcatgattttaatgcttatgctatcttttttatttagtccataaaaccttaaaggaccttttcttatgggatatttatattttcctaacaaagc


aatcggcgtcataaactttagttgcttacgacgcctgtggacgtcccccccttccccttacgggcaagtaaacttagggattttaatgcaataa


ataaatttgtcctcttcgggcaaatgaattttagtatttaaatatgacaagggtgaaccattacttttgttaacaagtgatcttaccactcactattttt


gttgaattttaaacttatttaaaattctcgagaaagattttaaaaataaacttttttaatcttttatttattttttcttttttCGTATGGAATTGC


CCAATATTATTCAACAATTTATCGGAAACAGCGTTTTAGAGCCAAATAAAATTGGTC


AGTCGCCATCGGATGTTTATTCTTTTAATCGAAATAATGAAACTTTTTTTCTTAAGCG


ATCTAGCACTTTATATACAGAGACCACATACAGTGTCTCTCGTGAAGCGAAAATGTT


GAGTTGGCTCTCTGAGAAATTAAAGGTGCCTGAACTCATCATGACTTTTCAGGATGA


GCAGTTTGAATTTATGATCACTAAAGCGATCAATGCAAAACCAATTTCAGCGCTTTT


TTTAACAGACCAAGAATTGCTTGCTATCTATAAGGAGGCACTCAATCTGTTAAATTC


AATTGCTATTATTGATTGTCCATTTATTTCAAACATTGATCATCGGTTAAAAGAGTC


AAAATTTTTTATTGATAACCAACTCCTTGACGATATAGATCAAGATGATTTTGACAC


TGAATTATGGGGAGACCATAAAACTTACCTAAGTCTATGGAATGAGTTAACCGAGA


CTCGTGTTGAAGAAAGATTGGTTTTTTCTCATGGCGATATCACGGATAGTAATATTT


TTATAGATAAATTCAATGAAATTTATTTTTTAGACCTTGGTCGTGCTGGGTTAGCAG


ATGAATTTGTAGATATATCCTTTGTTGAACGTTGCCTAAGAGAGGATGCATCGGAG


GAAACTGCGAAAATATTTTTAAAGCATTTAAAAAATGATAGACCTGACAAAAGGAA


TTATTTTTTAAAACTTGATGAATTGAATTGAttccaagcattatctaaaatactctgcaggcacgctagcttgta


ctcaagctcgtaacgaaggtcgtgaccttgctcgtgaaggtggcgacgtaattcgttcagcttgtaaatggtctccagaacttgctgctgcat


gtgaagtttggaaagaaattaaattcgaatttgatactattgacaaactttaatttttatttttcatgatgtttatgtgaatagcataaacatcgtttta


tttttatggtgtttaggttaaatacctaaacatcattttacatttttaaaattaagttctaaagttatcttttgtttaaatttgcctgctttataaattacga


tgtgccagaaaaataaaatcttagctttttattatagaatttatctttatgtattatattttataagttataataaaagaaatagtaacatactaaagcg


gatgtagcgcgtttatcttaacggaaggaattcggcgcctacgtacccgggtcgcgaggatccACGCGTTAATAGCTCAC


TTTTCTTTAAATTTAATTTTTAATTTAAAGGTGTAAGCAAATTGCCTGACGAGAGAT


CCACTTAAAGGATGACAGTGGCGGGCTACTGCCTACTTCCCTCCGGGATAAAATTT


ATTTGAAAAACGTTAGTTACTTCCTAACGGAGCATTGACATCCCCATATTTATATTA


GGACGTCCCCTTCGGGTAAATAAATTTTAGTGGACGTCCCCTTCGGGCAAATAAATT


TTAGTGGACAATAAATAAATTTGTTGCCTGCCAACTGCCTAGGCAAGTAAACTTGG


GAGTATTAAAATAGGACGTCAGTGGCAGTTGCCTGCCAACTGCCTATATTTATATAC


TGCGAAGCAGGCAGTGGCGGTACCACTGCCACTGGCGTCCTAATATAAATATTGGG


CAACTAAAGTTTATAGCAGTATTAACATCCTATATTTATATACTCCGAAGGAACTTG


TTAGCCGATAGGCGAGGCAACAAATTTATTTATTGTCCCGTAAAAGGATGCCTCCA


GCATCGAAGGGGAAGGGGACGTCCTAGGCCATAAAACTAAAGGGAAATCCATAGT


AACTGATGTTATAAATTTATAGACTCCAAAAAACAGCTGCGTTATAAATAACTTCTG


TTAAATATGGCCAAGGGGACAGGGGCACTTTCAACTAAGTGTACATTAAAAATTGA


CAATTCAATTTTTTTTAATTATAATATATATTTAGTAAAATATAACAAAAAGCCCCC


ATCGTCTAGgtagaattccagctggcggccgccctatg



31
GTGCACTCTCAGTACAATCTGCTCTGATGCCGCATAGTTAAGCCAGCCCCGACACCC
Endo-


GCCAACACCCGCTGACGCGCCCTGACGGGCTTGTCTGCTCCCGGCATCCGCTTACA
xylanase


GACAAGCTGTGACCGTCTCCGGGAGCTGCATGTGTCAGAGGTTTTCACCGTCATCAC
insertion


CGAAACGCGCGAGACGAAAGGGCCTCGTGATACGCCTATTTTTATAGGTTAATGTC
cassette


ATGATAATAATGGTTTCTTAGACGTCAGGTGGCACTTTTCGGGGAAATGTGCGCGG
(pSE-3HB-


AACCCCTATTTGTTTATTTTTCTAAATACATTCAAATATGTATCCGCTCATGAGACA
K-tD2:


ATAACCCTGATAAATGCTTCAATAATATTGAAAAAGGAAGAGTATGAGTATTCAAC
BD11)


ATTTCCGTGTCGCCCTTATTCCCTTTTTTGCGGCATTTTGCCTTCCTGTTTTTGCTCAC


CCAGAAACGCTGGTGAAAGTAAAAGATGCTGAAGATCAGTTGGGTGCACGAGTGG


GTTACATCGAACTGGATCTCAACAGCGGTAAGATCCTTGAGAGTTTTCGCCCCGAA


GAACGTTTTCCAATGATGAGCACTTTTAAAGTTCTGCTATGTGGCGCGGTATTATCC


CGTATTGACGCCGGGCAAGAGCAACTCGGTCGCCGCATACACTATTCTCAGAATGA


CTTGGTTGAGTACTCACCAGTCACAGAAAAGCATCTTACGGATGGCATGACAGTAA


GAGAATTATGCAGTGCTGCCATAACCATGAGTGATAACACTGCGGCCAACTTACTT


CTGACAACGATCGGAGGACCGAAGGAGCTAACCGCTTTTTTGCACAACATGGGGGA


TCATGTAACTCGCCTTGATCGTTGGGAACCGGAGCTGAATGAAGCCATACCAAACG


ACGAGCGTGACACCACGATGCCTGTAGCAATGGCAACAACGTTGCGCAAACTATTA


ACTGGCGAACTACTTACTCTAGCTTCCCGGCAACAATTAATAGACTGGATGGAGGC


GGATAAAGTTGCAGGACCACTTCTGCGCTCGGCCCTTCCGGCTGGCTGGTTTATTGC


TGATAAATCTGGAGCCGGTGAGCGTGGGTCTCGCGGTATCATTGCAGCACTGGGGC


CAGATGGTAAGCCCTCCCGTATCGTAGTTATCTACACGACGGGGAGTCAGGCAACT


ATGGATGAACGAAATAGACAGATCGCTGAGATAGGTGCCTCACTGATTAAGCATTG


GTAACTGTCAGACCAAGTTTACTCATATATACTTTAGATTGATTTAAAACTTCATTTT


TAATTTAAAAGGATCTAGGTGAAGATCCTTTTTGATAATCTCATGACCAAAATCCCT


TAACGTGAGTTTTCGTTCCACTGAGCGTCAGACCCCGTAGAAAAGATCAAAGGATC


TTCTTGAGATCCTTTTTTTCTGCGCGTAATCTGCTGCTTGCAAACAAAAAAACCACC


GCTACCAGCGGTGGTTTGTTTGCCGGATCAAGAGCTACCAACTCTTTTTCCGAAGGT


AACTGGCTTCAGCAGAGCGCAGATACCAAATACTGTTCTTCTAGTGTAGCCGTAGTT


AGGCCACCACTTCAAGAACTCTGTAGCACCGCCTACATACCTCGCTCTGCTAATCCT


GTTACCAGTGGCTGCTGCCAGTGGCGATAAGTCGTGTCTTACCGGGTTGGACTCAA


GACGATAGTTACCGGATAAGGCGCAGCGGTCGGGCTGAACGGGGGGTTCGTGCAC


ACAGCCCAGCTTGGAGCGAACGACCTACACCGAACTGAGATACCTACAGCGTGAGC


TATGAGAAAGCGCCACGCTTCCCGAAGGGAGAAAGGCGGACAGGTATCCGGTAAG


CGGCAGGGTCGGAACAGGAGAGCGCACGAGGGAGCTTCCAGGGGGAAACGCCTGG


TATCTTTATAGTCCTGTCGGGTTTCGCCACCTCTGACTTGAGCGTCGATTTTTGTGAT


GCTCGTCAGGGGGGCGGAGCCTATGGAAAAACGCCAGCAACGCGGCCTTTTTACGG


TTCCTGGCCTTTTGCTGGCCTTTTGCTCACATGTTCTTTCCTGCGTTATCCCCTGATTC


TGTGGATAACCGTATTACCGCCTTTGAGTGAGCTGATACCGCTCGCCGCAGCCGAA


CGACCGAGCGCAGCGAGTCAGTGAGCGAGGAAGCGGAAGAGCGCCCAATACGCAA


ACCGCCTCTCCCCGCGCGTTGGCCGATTCATTAATGCAGCTGGCACGACAGGTTTCC


CGACTGGAAAGCGGGCAGTGAGCGCAACGCAATTAATGTGAGTTAGCTCACTCATT


AGGCACCCCAGGCTTTACACTTTATGCTTCCGGCTCGTATGTTGTGTGGAATTGTGA


GCGGATAACAATTTCACACAGGAAACAGCTATGACCATGATTACGCCaagctcgcggccgc


agtactCTGCAGATTTTATGCAAAATTAAAGTCTTGTGACAACAGCTTTCTCCTTAAGTG


CAAATATCGCCCATTCTTTCCTCTTTTCGTATATAAATGCTGTAATAGTAGGATGTC


GTACCCGTAAAGGTACGACATTGAATATTAATATACTCCTAAGTTTACTTTCCCAAT


ATTTATATTAGGACGTCCCCTTCGGGTAAATAAATTTTAGTGGCAGTGGTACCGCCA


CTCCCTATTTTAATACTGCGAAGGAGGCAGTTGGCAGGCAACTCGTCGTTCGCAGTA


TATAAATATCCACTAATATTTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGG


GAAAGAAGCAGTCGCCTCCTTGCGAAAAGGTTTACTTGCCCGACCAGTGAAAAGCA


TGCTGTAAGATATAAATCTACCCTGAAAGGGATGCATTTCACCATAATACTATACA


AATGGTGTTACCCTTTGAGGATCATAACGGTGCTACTGGAATATATGGTCTCTTCAT


GGATAGACGATAGCCATTTATTTACCCATTAAGGGGACATTAGTGGCCTGTCACTGC


TCCTTACGAGACGCCAGTGGACGTTCGTCCTAGAAAATTTATGCGCTGCCTAGAAG


CCCCAAAAGGGAAGTTTACTGACTCGTTAGAGCGTGCGCTAACAGGTTTAAATACT


TCAATATGTATATTAGGACGCCGGTGGCAGTGGTACCGCCACTGCCACCGTCGGAG


GACGTCCCTTACGGTATATTATATACTAGGATTTTAATACTCCGAAGGAGGCAGTGG


CGGTACCACTGCCACTAATATTTATATTCCCGTAAGGGACGTCCTCCTTCGGAGTAT


GTAAACATTCTAAGTTTACTTGCCCAATATTTATATTAGGCAGTTGGCAGGCAACTG


CTAGCTCTCCTCCTTCGGAGTATGTAAACATCGCAGTATATAAATATCCACTAATAT


TTATATTCCCGTAAGGGGACGTCCCGAAGGGGAAGGGGAAGGACGTCAGTGGCAG


TTGCCTGCCAACTGCCTAGGCAAGTAAACTTAGGAGTATATAAATATAGGCAGTCG


CGGTACCACTGCCACTGACGTCCTGCCAACTGCCTAGGCAAGTAAACTTAAGTGGC


ACTAAAATGCATTTGCCCGAAGGGGAAGGAGGACGCCAGTGGCAGTGGTACCGCC


ACTGCCTCCTTCGGAGTATTAAAATCCTAGTATGTAAATCTGCTAGCGCAGGAAATA


AATTTTATTCTATTTATATACTCCGTTAGGAGGTAAGTAAACCCCTTCCCCTTCGGG


ACGTCAGTGCAGTTGCCTGCCAACTGCCTAATATAAATATTAGACCACTAAAGTTTG


GCAACTGCCAACTGTTGTCCTTCGGAGGAAAAAAAATGGTTAACTCGCAAGCAGTT


AACATAACTAAAGTTTGTTACTTTACCGAAGACGTTTACCCTTTCTCGGTTAAGGAG


ACGGAGACAGTTGCACTGTGACTGCCTAGTATAGCAATTTTGTTTTTGTTTATATGC


TCGACAAAATGACTTTCATAAAAATATAAAGTAGTTAGCTAGTTATTTTATATCACT


ATAACTAGGGTTCTCAGAGGCACCGAAGTCACTTGTAAAAATAGTACTTTTTAACTT


GTTTAATCTTCGTGTTCTTCAAAAGGATCACGTAATTTTTTTGAAGGTGGACCAAAA


CTAACATAAACTGAATAGCCAGTTACACTTAACAGAAGAAACCATAAAAAAAAGG


TAAAGAAAAAAGCTGGACTTTCCATAGCTCATTTAATAATAAAATTATTCTCTTTTC


AACATATCTCTTAGATAGTTCAAAAGACTTGACGACTGTGTCCCACATTTTTAAACA


AAATTAATCTACTCAAAATTTTGCCCTGAGAAAGAATAACTTACTTCGTTTTTGCAG


TAGCCATTCATGTCACTTTGAAACTGTCCTTACAAAGTTAAACATTAATTAAAAATT


ATTTAATTTTTATATAACAAATATTATATTAAATAAAAAATGAACAAAGAACTTCTA


AGATCGTCTTTAGTGAGTAATTAAAGAGTTTTACTTACCAGACAAGGCAGTTTTTTC


ATTCTTTTAAAGCAGGCAGTTCTGAAGGGGAAAAGGGACTGCCTACTGCGGTCCTA


GGTAAATACATTTTTATGCAATTTATTTCTTGTGCTAGTAGGTTTCTATACTCACAAG


AAGCAACCCCTTGACGAGAGAACGTTATCCTCAGAGTATTTATAATCCTGAGAGGG


AATGCACTGAAGAATATTTTCCTTATTTTTTACAGAAAGTAAATAAAATAGCGCTAA


TAACGCTTAATTCATTTAATCAATTATGGCAACAGGAACTTCTAAAGCTAAACCATC


AAAAGTAAATTCAGACTTCCAAGAACCTGGTTTAGTTACACCATTAGGTACTTTATT


ACGTCCACTTAACTCAGAAGCAGGTAAAGTATTACCAGGCTGGGGTACAACTGTTT


TAATGGCTGTATTTATCCTTTTATTTGCAGCATTCTTATTAATCATTTTAGAAATTTA


CAACAGTTCTTTAATTTTAGATGACGTTTCTATGAGTTGGGAAACTTTAGCTAAAGT


TTCTTAATTTTATTTAACACAAACATAAAATATAAAACTGTTTGTTAAGGCTAGCTG


CTAAGTCTTCTTTTCGCTAAGGTAAACTAAGCAACTCAACCATATTTATATTCGGCA


GTGGCACCGCCAACTGCCACTGGCCTTCCGTTAAGATAAACGCGTggatctcacgtgACTA


GTgtcgagtggtaccgccactgcctagtatataaatatcggcagttggcaggatatttatatactccgaaggaacttgttagccgataggcg


aggcaactgccactaaaatttatttgcctcctaacggagcattaaaatccctaagtttacttgcccgtaaggggaaggggacgtccactaata


tttatattaggcagttggcaggcaacaataaatacatttgtcccgtaaggggacgtcctgccaactgcctatggtagctattaagtatatatata


tgaaaagtgtgtataaactaaactaaaataaaccaggtatggttaaccagatttattttagtttaaaaaaaaattagttgtttgagctagagttagt


tgaagctaagtctagaTTAACCGGTTCCTTTATCATCATCATCTTTGTAATCACTTCCACCGCC


ACCTGAGCCTTGAAAGTATAAGTTTTCACCGGTACCGCTAACAGTGATAGAAGCAC


TACCTGATGAAAAATAACCTTCAACAGCTACAATTTGATAGTCCATTGTACCTAATG


TTAAACCTTGTTGAGCCCATGCATTAAAGTGGTTTGCTGTATTAACACTACCACTTG


AACGATGATTACGTCTTACACTCCAGTATTGGTAGAAAGTGGCAGTTCCAATTATAG


ATGGTTGATTTACGCGTTGAGTACGATAAATATCATAAACTGATCCATCTGAAGTAA


CTTCACCTAATTTAGTAGCACCTGTTGAAGGGTTGTATGTACCAAAGTTCTCTACAA


TATAATATTCAATTAATGGGTTACGGCTCCAACCGTATACACTTAAATAAGAATTAC


CATTAGGGTTGTAACTACCAGAGAAATTGATTACCTTATTCTTTGTACCAGGTTGCC


AACCTTTTCCTCCAACAAAATTGCCTGAGTTACTCCAATTTACACTAAATTGACCAC


CAGGTCCATTAGTATATGTAACACCACCGTGTCCATCATTCCAGTAAGAATAAAAG


TAACCGTTATTGTAACCTGTACCTGGTTGAATTGTTTGACGTTTTTCTACTGCAACTG


ATTCCACTTCAGCAGCTGGACGGCAACTTGCACGTGAAGGTGGAGATGCTGCTAAA


AGACTTGTGAAAGATACTGGTACCATatgcgtgtatctccaaaataaaaaaacaactcatcgttacgttaaatttatt


attatttaattttaatcattgtgtatttaatattataacttatataaaataaaattaaaaataagcattttttacacacatatttttaaataaatctttaaac


gggttatatatagttatatatatgggactagaactgctttgtgcatagtcatcacaattattatattataaaccatgaataaaggttttattattatgat


ataaaaatgcataaaatttttataaattttgcaagtaaaatatataattaggaaaaaatttaaaatttaaaatgttagtcaagtttacaactaatacttt


taattttgtattttaagtattggacatttttgtggaattaaatgtaccaaatatccatttaatttcatACTAGTgatatctacgtaatcgatgaatt


cgatcccatttttataactggatctcaaaatacctataaacccattgttcttctcttttagctctaagaacaatcaatttataaatatatttattattatg


ctataatataaatactatataaatacatttacctttttataaatacatttaccttttttttaatttgcatgattttaatgcttatgctatcttttttatttagtcc


ataaaacctttaaaggaccttttcttatgggatatttatattttcctaacaaagcaatcggcgtcataaactttagttgcttacgacgcctgtggac


gtcccccccttccccttacgggcaagtaaacttagggattttaatgcaataaataaatttgtcctcttcgggcaaatgaattttagtatttaaatat


gacaagggtgaaccattacttttgttaacaagtgatcttaccactcactatttttgttgaattttaaacttatttaaaattctcgagaaagattttaaa


aataaacttttttaatcttttatttattttttcttttttCGTATGGAATTGCCCAATATTATTCAACAATTTATCGG


AAACAGCGTTTTAGAGCCAAATAAAATTGGTCAGTCGCCATCGGATGTTTATTCTTT


TAATCGAAATAATGAAACTTTTTTTCTTAAGCGATCTAGCACTTTATATACAGAGAC


CACATACAGTGTCTCTCGTGAAGCGAAAATGTTGAGTTGGCTCTCTGAGAAATTAA


AGGTGCCTGAACTCATCATGACTTTTCAGGATGAGCAGTTTTGAATTTATGATCACTA


AAGCGATCAATGCAAAACCAATTTCAGCGCTTTTTTTAACAGACCAAGAATTGCTTG


CTATCTATAAGGAGGCACTCAATCTGTTAAATTCAATTGCTATTATTGATTGTCCAT


TTATTTCAAACATTGATCATCGGTTAAAAGAGTCAAAATTTTTTATTGATAACCAAC


TCCTTGACGATATAGATCAAGATGATTTTGACACTGAATTATGGGGAGACCATAAA


ACTTACCTAAGTCTATGGAATGAGTTAACCGAGACTCGTGTTGAAGAAAGATTGGT


TTTTTCTCATGGCGATATCACGGATAGTAATATTTTTATAGATAAATTCAATGAAAT


TTATTTTTTAGACCTTGGTCGTGCTGGGTTAGCAGATGAATTTGTAGATATATCCTTT


GTTGAACGTTGCCTAAGAGAGGATGCATCGGAGGAAACTGCGAAAATATTTTTAAA


GCATTTAAAAAATGATAGACCTGACAAAAGGAATTATTTTTTAAAACTTGATGAAT


TGAATTGAttccaagcattatctaaaatactctgcaggcacgctagcttgtactcaagctcgtaacgaaggtcgtgaccttgctcgtga


aggtggcgacgtaattcgttcagcttgtaaatggtctccagaacttgctgctgcatgtgaagtttggaaagaaattaaattcgaatttgatacta


ttgacaaactttaatttttatttttcatgatgtttatgtgaatagcataaacatcgtttttatttttatggtgtttaggttaaatacctaaacatcattttaca


tttttaaaattaagttctaaagttatcttttgtttaaatttgcctgtctttataaattacgatgtgccagaaaaataaaatcttagctttttattatagaatt


tatctttatgtattatattttataagttataataaaagaaatagtaacatactaaagcggatgtagcgcgtttatcttaacggaaggaattcggcgc


ctacgtacccgggtcgcgaggatccACGCGTTAATAGCTCACTTTTCTTTAAATTTAATTTTTAATT


TAAAGGTGTAAGCAAATTGCCTGACGAGAGATCCACTTAAAGGATGACAGTGGCGG


GCTACTGCCTACTTCCCTCCGGGATAAAATTTATTTGAAAAACGTTAGTTACTTCCT


AACGGAGCATTGACATCCCCATATTTATATTAGGACGTCCCCTTCGGGTAAATAAAT


TTTAGTGGACGTCCCCTTCGGGCAAATAAATTTTAGTGGACAATAAATAAATTTGTT


GCCTGCCAACTGCCTAGGCAAGTAAACTTGGGAGTATTAAAATAGGACGTCAGTGG


CAGTTGCCTGCCAACTGCCTATATTTATATACTGCGAAGCAGGCAGTGGCGGTACC


ACTGCCACTGGCGTCCTAATATAAATATTGGGCAACTAAAGTTTATAGCAGTATTAA


CATCCTATATTTATATACTCCGAAGGAACTTGTTAGCCGATAGGCGAGGCAACAAA


TTTATTTATTGTCCCGTAAAAGGATGCCTCCAGCATCGAAGGGGAAGGGGACGTCC


TAGGCCATAAAACTAAAGGGAAATCCATAGTAACTGATGTTATAAATTTATAGACT


CCAAAAAACAGCTGCGTTATAAATAACTTCTGTTAAATATGGCCAAGGGGACAGGG


GCACTTTCAACTAAGTGTACATTAAAAATTGACAATTCAATTTTTTTTAATTATAAT


ATATATTTAGTAAAATATAACAAAAAGCCCCCATCGTCTAGgtagaattccagctggcggccgcc


ctatg





















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































Example 8
Construction of a C. reinhardtii Strain Transformed with a Construct that does not Disrupt Photosynthetic Capability
In this example a nucleic acid encoding endo-β-glucanase from T. reesei was introduced into C. reinhardtii . Transforming DNA (SEQ ID NO. 28, Table 4) is shown graphically in FIG. 2B . In this instance the segment labeled “Transgene” is the endo-β-glucanase encoding gene (SEQ ID NO. 16, Table 3), the segment which drives expression of the transgene (labeled 5′ UTR) is the 5′ UTR and promoter sequence for the psbC gene from C. reinhardtii , the segment labeled 3′ UTR contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the 3HB locus of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the 3HB locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
For these experiments, all transformations were carried out on C. reinhardtii strain 137c (mt+). Cells were grown to late log phase (approximately 7 days) in the presence of 0.5 mM 5-fluorodeoxyuridine in TAP medium (Gorman and Levine, Proc. Natl. Acad. Sci., USA 54:1665-1669, 1965, which is incorporated herein by reference) at 23° C. under constant illumination of 450 Lux on a rotary shaker set at 100 rpm. Fifty ml of cells were harvested by centrifugation at 4,000×g at 23° C. for 5 min. The supernatant was decanted and cells resuspended in 4 ml TAP medium for subsequent chloroplast transformation by particle bombardment (Cohen et al., supra, 1998). All transformations were carried out under kanamycin selection (100 μg/ml), in which resistance was conferred by the gene encoded by the segment in FIG. 2B labeled “Selection Marker.” (Chlamydomonas Stock Center, Duke University).
PCR was used to identify transformed strains. For PCR analysis, 10 6 algae cells (from agar plate or liquid culture) were suspended in 10 mM EDTA and heated to 95° C. for 10 minutes, then cooled to near 23° C. A PCR cocktail consisting of reaction buffer, MgCl2, dNTPs, PCR primer pair(s) (Table 2 and shown graphically in FIG. 3B ), DNA polymerase, and water was prepared. Algae lysate in EDTA was added to provide template for reaction. Magnesium concentration is varied to compensate for amount and concentration of algae lysate in EDTA added. Annealing temperature gradients were employed to determine optimal annealing temperature for specific primer pairs.
To identify strains that contain the endo-β-glucanase gene, a primer pair was used in which one primer anneals to a site within the psbC 5′UTR (SEQ ID NO. 10) and the other primer anneals within the endo-β-glucanase coding segment (SEQ ID NO. 3). Desired clones are those that yield a PCR product of expected size. To determine the degree to which the endogenous gene locus is displaced (heteroplasmic vs. homoplasmic), a PCR reaction consisting of two sets of primer pairs were employed (in the same reaction). The first pair of primers amplifies the endogenous locus targeted by the expression vector (SEQ ID NOs. 13 and 14). The second pair of primers (SEQ ID NOs. 6 and 7) amplifies a constant, or control region that is not targeted by the expression vector, so should produce a product of expected size in all cases. This reaction confirms that the absence of a PCR product from the endogenous locus did not result from cellular and/or other contaminants that inhibited the PCR reaction. Concentrations of the primer pairs are varied so that both reactions work in the same tube; however, the pair for the endogenous locus is 5× the concentration of the constant pair. The number of cycles used was >30 to increase sensitivity. The most desired clones are those that yield a product for the constant region but not for the endogenous gene locus. Desired clones are also those that give weak-intensity endogenous locus products relative to the control reaction.
Results from this PCR on 96 clones were determined and the results are shown in FIG. 10 . FIG. 10A shows PCR results using the transgene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the endo-β-glucanase gene. FIG. 10B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene (e.g. numbers 67, 92). Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis.
To ensure that the presence of the endo-β-glucanase-encoding gene led to expression of the endo-β-glucanase protein, a Western blot was performed. Approximately 1×10 8 algae cells were collected from TAP agar medium and suspended in 0.5 ml of lysis buffer (750 mM Tris, pH=8.0, 15% sucrose, 100 mM beta-mercaptoethanol). Cells were lysed by sonication (5×30 sec at 15% power). Lysate was mixed 1:1 with loading buffer (5% SDS, 5% beta-mercaptoethanol, 30% sucrose, bromophenol blue) and proteins were separated by SDS-PAGE, followed by transfer to PVDF membrane. The membrane was blocked with TBST+5% dried, nonfat milk at 23° C. for 30 min, incubated with anti-FLAG antibody (diluted 1:1,000 in TBST+5% dried, nonfat milk) at 4° C. for 10 hours, washed three times with TBST, incubated with horseradish-linked anti-mouse antibody (diluted 1:10,000 in TBST+5% dried, nonfat milk) at 23° C. for 1 hour, and washed three times with TBST. Proteins were visualized with chemiluminescent detection. Results from multiple clones ( FIG. 10C ) show that expression of the endo-β-glucanase gene in C. reinhardtii cells resulted in production of the protein.
Similar results were seen ( FIG. 11 ) with a similar construct containing the β-glucosidase gene from T. reesei (SEQ ID NO. 23, Table 4). The construct containing the endoxylanase gene is depicted in FIG. 2B . In this instance the segment labeled “Transgene” is the β-glucosidase encoding gene (SEQ ID NO. 17, Table 3), the segment which drives expression of the transgene (labeled 5′ UTR) is the 5′ UTR and promoter sequence for the psbC gene from C. reinhardtii , the segment labeled 3′ UTR contains the 3′ UTR for the psbA gene from C. reinhardtii , and the segment labeled “Selection Marker” is the kanamycin resistance encoding gene from bacteria, which is regulated by the 5′ UTR and promoter sequence for the atpA gene from C. reinhardtii and the 3′ UTR sequence for the rbcL gene from C. reinhardtii . The transgene cassette is targeted to the 3HB locus of C. reinhardtii via the segments labeled “5′Homology” and “3′ Homology,” which are identical to sequences of DNA flanking the 3HB locus on the 5′ and 3′ sides, respectively. All DNA manipulations carried out in the construction of this transforming DNA were essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
FIG. 11A shows PCR using the gene-specific primer pair. As can be seen, multiple transformed clones are positive for insertion of the β-glucosidase gene. FIG. 11B shows the PCR results using the primer pairs to differentiate homoplasmic from heteroplasmic clones. As can be seen, multiple transformed clones are either homoplasmic or heteroplasmic to a degree in favor of incorporation of the transgene (e.g. numbers 16, 64). Unnumbered clones demonstrate the presence of wild-type psbA and, thus, were not selected for further analysis. Western blot analysis demonstrating protein expression is demonstrated in FIG. 11C .
Example 9
Construction of a Cyanobacteria Strain Expressing a Biomass Degrading Enzyme Construct that does not Disrupt Photosynthetic Capability
In this example, a construct is made which is capable of insertion into a selected cyanobacteria species (e.g., Synechocystis sp. strain PCC6803, Synechococcus sp. strain PCC7942, Thermosynechococcus elongates BP-1, and Prochloroccus marina). Examples of such constructs are represented graphically in FIG. 13 . In addition to the transgene and regulatory sequences (e.g., promoter and terminator), typically, such constructs will contain a suitable selectable marker (e.g., an antibiotic resistance gene). The transgene may be any gene of interest, but is preferably a biomass degrading enzyme (e.g., a cellulolytic, hemicellulolytic, ligninolytic enzyme). A cassette, or portion of the vector, may be integrated into the host cell genome via homologous recombination when the exogenous DNA to be inserted is flanked by regions which share homology to portions of the cyanobacterial genome. Alternately, the construct may be a self-replicating vector which does not integrate into the host cell genome, but stably or transiently transforms the host cell. In some instances, regulatory elements, transgenes, and/or selectable markers may need to be biased to the preferred codon usage of the host organism. All DNA manipulations are carried out essentially as described by Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory Press 1989) and Cohen et al., Meth. Enzymol. 297, 192-208, 1998.
Transformation of Synechocystis with a construct of the present invention can be carried out by any method known in the art. (See, e.g., Dzelzkalns and Bogorad, J. Bacteriol. 165: 964-71 (1986)). For this example Synechocystis sp. strain 6803 is grown to a density of approximately 2×10 8 cells per ml and harvested by centrifugation. The cell pellet is re-suspended in fresh BG-11 medium (ATCC Medium 616) at a density of 1×10 9 cells per ml and used immediately for transformation. One-hundred microliters of these cells are mixed with 5 ul of a mini-prep solution containing the construct and the cells are incubated with light at 30° C. for 4 hours. This mixture is then plated onto nylon filters resting on BG-11 agar supplemented with TES pH 8.0 and grown for 12-18 hours. The filters are then transferred to BG-11 agar+TES+5 ug/ml ampicillin and allowed to grow until colonies appear, typically within 7-10 days.
Colonies are then picked into BG-11 liquid media containing 5 ug/ml ampicillin and grown for 5 days. The transformed cells are incubated under low light intensity for 1-2 days and thereafter moved to normal growth conditions. These cells are then transferred to BG-11 media containing 10 ug/ml ampicilin and allowed to grow for 5 days. Cells were then harvested for PCR analysis to determine the presence of the exogenous insert. Western blots may be performed (essentially as described above) to determine expression levels of the protein(s) encoded by the inserted construct.
Example 10
Expression of Biomass Degrading Enzymes in Escherichia coli
In this example a nucleic acid encoding endo-β-glucanase from T. reesei was cloned into pET-21a using the NdeI and XhoI restriction sites present in both the gene and pET-21a. The resulting vector (SEQ ID NO. 25, Table 4) was transformed into E. coli BL-21 cells. Expression was induced when cell density reached OD=0.6. Cells were grown at 30° C. for 5 hours and then harvested. Purification was essentially as described previously. Activity of the enzymes expressed in bacteria was determined using assays essentially as described in previous examples. The results of these analyses are shown in FIG. 17 (Lane 2).
Nucleic acids encoding exo-β-glucanase, β-glucosidase and endoxylanase were also cloned into pET-21. The resulting vectors (SEQ ID NOs. 24, 26 and 27, respectively, Table 4) were transformed into E. coli BL-21 cells. Expression was induced when cell density reached OD=0.6. Cells were grown at 30° C. for 5 hours and then harvested. Purification was essentially as described previously. Activity of the enzymes expressed in bacteria was determined using assays essentially as described in previous examples. The results of these analyses are shown in FIG. 17 (Lane 1: exo-β-glucanase; Lane 3: β-glucosidase; and Lane 4: endoxylanase). Enzyme activity was also measured, essentially as previously described. Results, which are presented in background-subtracted values, are provided in Table 5.





TABLE 5



Enzyme activity of bacterially-produced

biomass degrading enzymes







Filter paper



Enzyme Added
assay
β-glucosidase assay
Xylanase assay



Control (TBS)
0.000
0.000
0.000

endo-β-glucanase
0.194
0.000
0.020

β-glucosidase
0.006
0.525
0.000

endoxylanase
0.000
0.011
3.131


























This data, along with the data shown in previous examples, demonstrates that the enzymes encoded by the vectors described herein can be functionally expressed by both algae and bacteria, despite the codon bias built into the sequences.
Various modifications, processes, as well as numerous structures that may be applicable herein will be apparent. Various aspects, features or embodiments may have been explained or described in relation to understandings, beliefs, theories, underlying assumptions, and/or working or prophetic examples, although it will be understood that any particular understanding, belief, theory, underlying assumption, and/or working or prophetic example is not limiting. Although the various aspects and features may have been described with respect to various embodiments and specific examples herein, it will be understood that any of same is not limiting with respect to the full scope of the appended claims or other claims that may be associated with this application.