摘要 |
The invention relates to an isolated polynucleotide which contains a polynucleotide sequence selected from the group comprising: a) a polynucleotide which is at least 70% identical to a polynucleotide coding for a polypeptide containing the amino acid sequence of SEQ ID No. 2, b) a polynucleotide coding for a polypeptide containing an amino acid sequence which is at least 70% identical to the amino acid sequence of SEQ ID No. 2, c) a polynucleotide which is complementary to the polynucleotides of a) or b), and d) a polynucleotide containing at least 15 consecutive nucleotides of the polynucleotide sequence of a), b) or c), and a fermentation process for the preparation of L-amino acids using corynebacteria in which at least the pknD gene is amplified, and to the use, as hybridization probes, of polynucleotides containing the sequences according to the invention. |