Cellulases and their uses
First Claim
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1. A cellulase fusion protein comprising:
- first amino acid sequence, which is the 20 K cellulase of Melanocarpus albomyces of SEQ ID NO;
2, or the 20K cellulase of Melanocarpus albomyces of SEQ ID NO;
2 having at least one modification selected from the group consisting of;
deletion of Ala at position 207, deletion of Val at position 208, substitution of Phe209Trp, and insertion of Pro after position 206, or a fragment thereof having cellulase activity, anda second amino acid sequence, which is the linker and cellulose binding domain (CBD) of Trichoderma reesei cellobiohydrolase I of SEQ ID NO;
4, or the linker and cellulose biding domain (CBD) of Trichoderma reesei cellobiohydrolase I of SEQ ID NO;
4 having at least one modification selected from the group consisting of;
substitution of tyrosine at position 492 (position 31 of the CBD), 493 (position 32 of the CBD) of the mature T. reesei CBHI with an aliphatic or aromatic amino acid, and deletions of amino acids 434 to 444 or 434 to 460 of the mature T. reesei CBHI sequence, or a fragment thereof having CBD activity, anda junction region having the following general formula;
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Abstract
The present invention provides novel cellulase fusion proteins, preparations of cellulase fusion proteins and compositions of cellulase fusion proteins. The present invention further provides cellulase expression vectors, host cells expressing cellulase and methods for preparing such vectors and cells. Uses of cellulases, cellulase preparations and cellulase compositions in the textile, detergent, pulp and paper industries are also provided.
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Citations
24 Claims
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1. A cellulase fusion protein comprising:
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first amino acid sequence, which is the 20 K cellulase of Melanocarpus albomyces of SEQ ID NO;
2, or the 20K cellulase of Melanocarpus albomyces of SEQ ID NO;
2 having at least one modification selected from the group consisting of;
deletion of Ala at position 207, deletion of Val at position 208, substitution of Phe209Trp, and insertion of Pro after position 206, or a fragment thereof having cellulase activity, anda second amino acid sequence, which is the linker and cellulose binding domain (CBD) of Trichoderma reesei cellobiohydrolase I of SEQ ID NO;
4, or the linker and cellulose biding domain (CBD) of Trichoderma reesei cellobiohydrolase I of SEQ ID NO;
4 having at least one modification selected from the group consisting of;
substitution of tyrosine at position 492 (position 31 of the CBD), 493 (position 32 of the CBD) of the mature T. reesei CBHI with an aliphatic or aromatic amino acid, and deletions of amino acids 434 to 444 or 434 to 460 of the mature T. reesei CBHI sequence, or a fragment thereof having CBD activity, anda junction region having the following general formula; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification