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Title: Variants of glycoside hydrolases

Patent ·
OSTI ID:1082743

The present invention relates to variants of a parent glycoside hydrolase, comprising a substitution at one or more positions corresponding to positions 21, 94, 157, 205, 206, 247, 337, 350, 373, 383, 438, 455, 467, and 486 of amino acids 1 to 513 of SEQ ID NO: 2, and optionally further comprising a substitution at one or more positions corresponding to positions 8, 22, 41, 49, 57, 113, 193, 196, 226, 227, 246, 251, 255, 259, 301, 356, 371, 411, and 462 of amino acids 1 to 513 of SEQ ID NO: 2 a substitution at one or more positions corresponding to positions 8, 22, 41, 49, 57, 113, 193, 196, 226, 227, 246, 251, 255, 259, 301, 356, 371, 411, and 462 of amino acids 1 to 513 of SEQ ID NO: 2, wherein the variants have glycoside hydrolase activity. The present invention also relates to nucleotide sequences encoding the variant glycoside hydrolases and to nucleic acid constructs, vectors, and host cells comprising the nucleotide sequences.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC36-98GO10337
Assignee:
Novozymes, Inc. (Davis, CA)
Patent Number(s):
8,383,385
Application Number:
13/009,524
OSTI ID:
1082743
Country of Publication:
United States
Language:
English

References (9)

Activity Studies and Crystal Structures of Catalytically Deficient Mutants of Cellobiohydrolase I fromTrichoderma reesei journal November 1996
Engineering of a glycosidase Family 7 cellobiohydrolase to more alkaline pH optimum: the pH behaviour of Trichoderma reesei Cel7A and its E223S/ A224H/L225V/T226A/D262G mutant journal May 2001
The relationship between thermal stability and pH optimum studied with wild-type and mutant Trichoderma reesei cellobiohydrolase Cel7A: Stability of cellobiohydrolase Cel7A journal March 2003
Structural basis for enantiomer binding and separation of a common β-blocker: crystal structure of cellobiohydrolase Cel7A with bound (S)-propranolol at 1.9 Å resolution journal January 2001
Molecular Cloning of Exo–Cellobiohydrolase I Derived from Trichoderma Reesei Strain L27 journal October 1983
Alkaline cellulases patent September 2000
Novel CBH1 homologs and variant CBH1 cellulases patent-application March 2005
Molecular cloning and sequence analysis of the cellobiohydrolase i gene fromTrichoderma koningii G-39 journal January 1994
Cellobiohydrolase I gene and improved variants patent May 2008

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