title: Isolation of a new peptide antibiotic, permetin A, from Bacillus circulans.
abstract: Permetin A was purified from the culture filtrate of Bacillus circulans AJ 3902 by extraction with n-butanol, precipitation with sodium helianthate, CM-cellulose column chromatography and Sephadex LH-20 column chromatography. The compound was found to be a new peptide antibiotic containing 2,4-diaminobutyric acid (Dab), leucine, isoleucine, phenylalanine, valine, serine (in a molar ratio of 3:2:1:1:1:1) and a fatty acid. This antibiotic showed activity in vitro against Gram-negative, Gram-positive and some anaerobic bacteria.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D000900:Anti-Bacterial Agents / Q000096:biosynthesis / Q000302:isolation & purification* / Q000494:pharmacology; D001407:Bacillus / Q000145:classification / Q000378:metabolism*; D001419:Bacteria / Q000187:drug effects; D055598:Chemical Phenomena; D002621:Chemistry; D007928:Lethal Dose 50; D051379:Mice; D010456:Peptides, Cyclic / Q000096:biosynthesis / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: D000596:Amino Acids; D000900:Anti-Bacterial Agents; D010456:Peptides, Cyclic