NEW RIBOSOMAL L1 PROTEIN GENE FROM CORYNEFORM BACTERIA, USEFUL, WHEN DOWNREGULATED, FOR INCREASING FERMENTATIVE PRODUCTION OF AMINO ACIDS.

摘要

Isolated nucleic acid (I) from coryneform bacteria which is at least 70% identical with a sequence that encodes a 145 amino acid (aa) polypeptide (II) fully defined in the specification, encodes a polypeptide at least 70% identical with (II), its complement or contains at least 15 consecutive bases of (I). Independent claims are also included for the following: (1) vector containing (I), deposited in Escherichia coli DH5 alpha /p DELTA rpk, as DSM 13158 (map reproduced in specification); (2) as host cells, coryneform bacteria that have a deletion or insertion in the rplk gene; and (3) method (M1) for producing L-aa, especially lysine, by fermenting bacteria in which at least the rplk gene has been weakened.