The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2020
Filed:
May. 25, 2018
Applicant:
Nanjing Bestzyme Bio-engineering Co., Ltd., Nanjing, CN;
Assignee:
Nanjing Bestzyme Bio-Engineering Co., LTD., Nanjing, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N 9/26 (2006.01); C12N 9/28 (2006.01); C12N 15/56 (2006.01); C12N 1/21 (2006.01); C07K 19/00 (2006.01);
U.S. Cl.
CPC ...
C12N 9/2417 (2013.01); C12Y 302/01001 (2013.01); C07K 2319/00 (2013.01);
Abstract
The present invention discloses an L-type amylase variant and use thereof. The α-amylase variant is obtained by deleting the first N-terminal amino acid residue V from the α-amylase ofand replacing it with three other amino acid residues DGL. The α-amylase variant provided by the present invention has high catalytic activity under the acidic conditions of pH 5.0-5.8 and a high temperature of 100° C. or above. The acid resistance and thermal stability of these α-amylase variants are suitable for starch liquefaction.