Patent ID: 7148047
Filing Date: 2006-12-12
Classification: C12P

Abstract:
1. A recombinant coryneform bacterium having L-cysteine producing ability, wherein said coryneform bacterium has been modified to increase the copy number of a polynucleotide coding for seine acetyltransferase so that the intracellular serine acetyltransferase activity is enhanced as compared to an unmodified coryneform bacterium, or a promoter sequence of the said polynucleotide is modified so that expression of the said polynucleotide is enhanced, whereby the intracellular serine acetyltransferase activity is enhanced as compared to an unmodified coryneform bacterium, wherein said polynucleotide is obtained from a bacterium belonging to the genus Escherichia, wherein the serine acetyltransferase of which feedback inhibition by L-cysteine is reduced, contains a mutation replacing the methionine residue at position and wherein said wild-type serine acetyltransferase has the amino acid sequence of SEQ ID NO: 8.