Patent ID: 6872553

Claim:
A process for the fermentative preparation of L-amino acids selected from the group consisting of L-lysine, L-threonine, and L-glutamate in Corynebacterium comprising: a) growing said Corynebacterium in which DNA encoding the polypeptide of SEQ ID NO:2 is attenuated by a method of method of mutagenesis selected from the group consisting of insertion mutagenesis by insertion of at least one base pair, deletion mutagenesis with deletion of at least one base pair, and transition or transversion mutagenesis with incorporation of a non-sense mutation or the activity of said polypeptide is reduced as compared to an unattenuated Corynebacterium; b) concentrating the desired L-amino acid product in the medium or cells of said bacteria; and c) isolating said L-amino acid product.