Modified .alpha.-amylases having altered calcium binding propert

Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Enzyme component of specific activity or source

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435201, 435202, 4351723, 435836, C11D 742, C12N 926, C12N 928, C12N 1500

Patent

active

057633851

ABSTRACT:
Novel .alpha.-amylase enzymes are disclosed in which a new calcium binding site is modified by chemically or genetically altering residues associated with that calcium binding site. The novel .alpha.-amylases have altered performance characteristics, such as low pH starch hydrolysis performance, stability and activity profiles.

REFERENCES:
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