α-amylase variant and use thereof
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United States of America Patent
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Aug 31, 2021
Grant Date -
Feb 28, 2019
app pub date -
Feb 24, 2017
filing date -
Feb 26, 2016
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Abstract
Provided is an α amylase variant obtained by the mutation or deletion of at least one amino acid residue in the amino acid sequence of a parent α amylase, and at the same time, same is an α amylase maintaining the capability of the parent to hydrolyse α-1,4 glycosidic bond, wherein the amino acid sequence homology of the two reaches 95% or more. A series of α amylase variants provided therein have a relatively high catalytic activity under acidic conditions of pH 5.0 and high temperatures of at least 100° C.
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