title: Malioxamycin, a new antibiotic with spheroplast-forming activity. I. Producing organism, fermentation, isolation and characterization.
abstract: Strain No. 15748, identifies as Streptomyces lydicus, produces a new antibiotic malioxamycin. Malioxamycin is a water-soluble, amphoteric antibiotic with low molecular weight, having a valine and a malic acid moieties in its structure. It gave a positive ninhydrin and ferric chloride reactions. Malioxamycin inhibited the growth of some Gram-negative bacteria by acting on peptidoglycan synthesis in the cell wall and produced spheroplasts from those sensitive bacteria.
mesh_terms: D000900:Anti-Bacterial Agents / Q000096:biosynthesis / Q000302:isolation & purification* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003470:Culture Media; D004151:Dipeptides / Q000096:biosynthesis / Q000302:isolation & purification* / Q000494:pharmacology; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000166:cytology / Q000187:drug effects; D005285:Fermentation; D010455:Peptides; D013104:Spheroplasts / Q000187:drug effects*; D013302:Streptomyces / Q000145:classification / Q000378:metabolism*
chemical_list: D000900:Anti-Bacterial Agents; D003470:Culture Media; D004151:Dipeptides; D010455:Peptides; C030866:malioxamycin