Studies on the biosynthesis of surfactin, a lipopeptide antibiotic from Bacillus subtilis ATCC 21332

B. Kluge,J. Vater,J. Salnikow,K. Eckart

Published 1988 in FEBS Letters

ABSTRACT

The biosynthesis of the lipopeptide antibiotic surfactin was studied in whole cells of Bacillus subtilis ATCC 21332 which incorporate 14C‐labeled precursor amino acids directly into the product. [14C]Acetate appeared in the fatty acid portion of surfactin and was also partially converted into leucine. An enzyme was isolated and partially purified from a cell‐free extract of the bacillus which catalyzes ATP‐Pi‐exchange reactions which are mediated by the amino acid components of surfactin. This activation pattern is consistent with a peptide synthesizing multienzyme which activates its substrate amino acids simultaneously as reactive aminoacyl phosphates.

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