Fusaricidin A, a new depsipeptide antibiotic produced by Bacillus polymyxa KT-8. Taxonomy, fermentation, isolation, structure elucidation and biological activity

Author(s): Kaneda, M

Abstract: Fusaricidin A, a new depsipeptide antibiotic, was isolated from the culture broth of Bacillus polymyxa KT-8 obtained from the rhizosphere of garlic suffering from the basal rot caused by Fusarium oxysporum. The structure of fusaricidin A was determined by 1D and 2D NMR and MS experiments coupled with amino acid analysis to be a hexadepsipeptide containing 15-guanidino-3-hydroxypentadecanoic acid as a side chain. The absolute configuration of each amino acid residue was determined by chiral HPLC. Fusaricidin A is active against fungi and Gram-positive bacteria.

Keyword(s): Amino Acid Sequence

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