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:
Jul. 26, 2005
Filed:
Mar. 18, 2002
Mike Farwick, Bielefeld, DE;
Brigitte Bathe, Salzkotten, DE;
Jennifer Brehme, Bielefeld, DE;
Klaus Huthmacher, Gelnhausen, DE;
Mike Farwick, Bielefeld, DE;
Brigitte Bathe, Salzkotten, DE;
Jennifer Brehme, Bielefeld, DE;
Klaus Huthmacher, Gelnhausen, DE;
Degussa AG, Düsseldorf, DE;
Abstract
The invention relates to a process for the preparation of L-amino acids. The process includes fermenting the coryneform bacteria producing the desired L-amino acid, in which at least the gene coding for 6-phosphofructokinase and/or the gene coding for 1-phosphofructokinase are/is attenuated, enriching the desired L-amino acid in the medium or in the cells of the bacteria, and isolating the L-amino acid. Optionally bacteria are employed in which, in addition, further genes of the biosynthetic pathway of the desired L-amino acid are enhanced, or bacteria are employed in which the metabolic pathways that diminish the formation of the desired L-amino acid are at least partly switched off.