Add time:07/14/2019         Source:sciencedirect.com

Nikkomycin, a nucleoside-peptide analog of UDP-N-acetylglucosamine, is a potent chitin synthase inhibitor produced by the bacterium Streptomyces tendae. The HPLC profile of fermentation products in culture broths of a non-producing mutant, Nik 15, was compared with nikkomycin standards. Nikkomycin C and D, the glycone and aglycone moieties, respectively, of nikkomycin Z accumulated. This indicates the mutation affects the capacity to form a peptide bond between nikkomycin C and D, which is here proposed to be the terminal step in the synthesis of the biologically active nikkomycin Z. This is also the first documented case of a mutation affecting a specific step in nikkomycin biosynthesis.

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