C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
C12N 15/56 (2006.01) C11D 3/386 (2006.01) C12N 9/28 (2006.01) C12N 15/75 (2006.01) C12P 19/14 (2006.01)
Patent
CA 2155831
Novel alpha-amylase mutants derived from the DNA sequences of naturally occurring or recombinant alpha-amylases are disclosed. The mutant alpha-amylases, in general, are obtained by in vitro modifications of a precursor DNA sequence encoding the naturally occurring or recombinant alpha-amylase to generate the substitution (replacement) or deletion of one or more oxidizable amino acid residues in the amino acid sequence of a precursor alpha-amylase. Such mutant alpha- amylases have altered oxidative stability and/or altered pH performance profiles and/or altered thermal stability as compared to the precursor. Also disclosed an detergent and starch liquefaction compositions comprising the mutant amylases, as well as methods of using the mutant amylases.
Antrim Richard L.
Barnett Christopher C.
Mitchinson Colin
Power Scott D.
Requadt Carol A.
Genencor International Inc.
Gowling Lafleur Henderson Llp
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