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:
Jan. 28, 2014
Filed:
Sep. 29, 2009
Applicants:
Brian James Paul, Wilmington, DE (US);
Wonchul Suh, Hockessin, DE (US);
Inventors:
Brian James Paul, Wilmington, DE (US);
Wonchul Suh, Hockessin, DE (US);
Assignee:
Butamax(TM) Advanced Biofuels LLC, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P 7/16 (2006.01); C12N 9/00 (2006.01); C12N 1/20 (2006.01); C12N 15/00 (2006.01); C07H 21/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Lactic acid bacterial (LAB) cells were modified such that they have a specific activity of dihydroxy-acid dehydratase enzyme activity that is increased to about 0.1 μmol minmg. LAB cells with even higher activities of 0.2 to 0.6 μmol minmgof DHAD activity were obtained. These modified cells may be used to produce isobutanol when additional isobutanol biosynthetic pathway enzymes are expressed.