title: Mutational biosynthesis by idiotrophs of Micromonospora purpurea. II. Conversion of non-amino containing cyclitols to aminoglycoside antibiotics.
abstract: A mutant of Micromonospora purpurea, which produces the gentamicin complex only when 2-deoxystreptamine is added to the fermentation medium, produces a new antibiotic complex, 2-hydroxygentamicin, when streptamine or 2,4,6/3,5-pentahydroxycyclohexanone is added to the fermentation medium. This mutant also produces the gentamicin complex when 2,4/3,5-tetrahydroxycyclohexanone is added to the fermentation medium. The C1 and C2 components of 2-hydroxygentamicin have broad spectrum in vitro antibacterial activity similar to the gentamicin C1 and C2 components, but with greater activity against some gentamicin-resistant strains.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D055598:Chemical Phenomena; D002621:Chemistry; D005839:Gentamicins / Q000031:analogs & derivatives* / Q000096:biosynthesis / Q000494:pharmacology; D008847:Micromonospora / Q000378:metabolism*; D009154:Mutation
chemical_list: D005839:Gentamicins