Glucanases, nucleic acids encoding them and methods for making and using them
First Claim
1. A synthetic or recombinant polypeptide with endoglucanase activity comprising:
- (a) the amino acid sequence as set forth in SEQ ID NO;
9;
(b) the synthetic or recombinant polypeptide encoded by the nucleic acid sequence as set forth in SEQ ID NO;
8;
or(c) the polypeptide of (a) or the polypeptide encoded by (b) but lacking a signal sequence or a carbohydrate binding module;
wherein, the polypeptide further comprises a heterologous sequence.
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Abstract
The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability, including thermotolerance or thermostability, at increased or decreased pHs and temperatures.
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Citations
20 Claims
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1. A synthetic or recombinant polypeptide with endoglucanase activity comprising:
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(a) the amino acid sequence as set forth in SEQ ID NO;
9;(b) the synthetic or recombinant polypeptide encoded by the nucleic acid sequence as set forth in SEQ ID NO;
8;
or(c) the polypeptide of (a) or the polypeptide encoded by (b) but lacking a signal sequence or a carbohydrate binding module; wherein, the polypeptide further comprises a heterologous sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17)
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14. A polypeptide having endoglucanase activity comprising SEQ ID NO:
- 9.
- 15. A polypeptide having endoglucanase activity encoded by SEQ ID NO:
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19. A composition comprising a mixture of SEQ ID NO:
- 9 or a polypeptide having at least 98% or more sequence identity to SEQ ID NO;
9 and at least one or more additional polypeptides. - View Dependent Claims (20)
- 9 or a polypeptide having at least 98% or more sequence identity to SEQ ID NO;
Specification