title: Rifamycin Z, a novel ansamycin from a mutant of Nocardia mediterranea.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D009154:Mutation; D009615:Nocardia / Q000378:metabolism*; D012294:Rifamycins / Q000096:biosynthesis / Q000302:isolation & purification*
chemical_list: D012294:Rifamycins