| 摘要 |
The invention relates to a DNA sequence with a nucleotide sequence encoding a polypeptide in a host cell having Cephalosporin C synthetase (DAC acetyltransferase) activity which is the last enzyme in the synthesis of cephalosporins. Embodiments of the invention relate to methods and compositions for detecting the gene or its product, mutants and hybrids of the gene, replicative cloning and expression vectors, and processes for preparing recombinant DAC acetyltransferase polypeptide useful for host cell synthesis of, as well as cell-free synthesis of natural and synthetic cephalosporin antibiotics. |
