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:
Nov. 27, 2012
Filed:
Dec. 30, 2008
Applicants:
Andrew Shaw, San Francisco, CA (US);
Regina Chin, Palo Alto, CA (US);
Karsten M. Kragh, Viby J, DK;
Inventors:
Assignee:
Danisco US Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12Q 1/40 (2006.01); C12N 9/26 (2006.01); C12N 9/28 (2006.01); C07K 14/00 (2006.01); C12P 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
G4-forming amylase (PS4), and variants thereof, advantageously can be used in an enzyme-catalyzed high temperature liquefaction step to produce ethanol from starch, e.g., cornstarch. PS4 produces significant amounts of maltotrioses, which can be utilized byin a subsequent fermentation step to produce ethanol. This property of PS4 advantageously allows ethanol to be produced from liquefacted starch in the absence of a saccharification step. PS4 variants are provided that exhibit improved properties, such as thermostability and/or altered exo-specific and endo-specific amylase activity.