Mutant A-amylase
First Claim
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1. An α
- -amylase derived from Bacillus in that it is the expression product of a mutated Bacillus DNA, sequence encoding an α
-amylase, the mutated DNA said α
-amylase comprising the deletion or substitution of a residue corresponding to N188 in Bacillus lichenformis.
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Abstract
Novel α-amylase enzymes are disclosed in which one or more asparagine residues are substituted with a different amino acid or deleted. The disclosed α-amylase enzymes show altered or improved low pH starch hydrolysis performance, stability and activity profiles.
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25 Claims
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1. An α
- -amylase derived from Bacillus in that it is the expression product of a mutated Bacillus DNA, sequence encoding an α
-amylase, the mutated DNA said α
-amylase comprising the deletion or substitution of a residue corresponding to N188 in Bacillus lichenformis. - 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)
- -amylase derived from Bacillus in that it is the expression product of a mutated Bacillus DNA, sequence encoding an α
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25. An α
- -amylase derived from Bacillus comprising the substitutions corresponding to M15T/N188S in Bacillus lichenformis.
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