title: A new antibiotic XK-90 I. Taxonomy of the producing organism, fermentation, isolation and physicochemical and biological properties.
abstract: A new antibiotic XK-90 is produced by Streptomyces sp. MK-90 and is active against Gram-positive and Gram-negative bacteria. The taxonomy of the organism, fermentation, isolation and physiochemical and biological properties are described.
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000032:analysis / Q000096:biosynthesis / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D001424:Bacterial Infections / Q000517:prevention & control; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004355:Drug Stability; D005285:Fermentation; D051379:Mice; D013302:Streptomyces / Q000145:classification / Q000378:metabolism*
chemical_list: D000900:Anti-Bacterial Agents