title: Compartmentation of enzymes interconverting aclacinomycins in Streptomyces species AM 33352.
abstract: The enzymatic interconversion of the aclacinomycins A (I), Y (II), and B (III) by Streptomyces spec. AM 33352/S 182 producing these aklavinone glycosides was investigated. The enzymes converting I to II and III, as well as vice versa, are located within different compartments separated by the cytoplasmic membrane. Aclacinomycin A (I) is biotransformed to II and III by the cell-free mycelium extract while the entire mycelium carries out the same type of conversion towards the opposite direction. Changes of enzyme activity are correlated to alterations in the ratio of aklavinone glycosides throughout the fermentation. A hypothesis is developed concerning the role of compartmentized oxidoreductase(s) in the passive flux of I from inside the cells to outside.
authors.affiliation: Akademie der Wissenschaften der DDR, Zentral-institut für Mikrobiologie und experimentelle Therapie, Jena.
authors.forename: U
authors.initials: U
authors.lastname: Gräfe
authors.forename: K
authors.initials: K
authors.lastname: Dornberger
authors.forename: W F
authors.initials: WF
authors.lastname: Fleck
authors.forename: C
authors.initials: C
authors.lastname: Freysoldt
mesh_terms: D015250:Aclarubicin / Q000031:analogs & derivatives* / Q000096:biosynthesis / Q000378:metabolism; D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002621:Chemistry; D005285:Fermentation; D013302:Streptomyces / Q000201:enzymology* / Q000378:metabolism
chemical_list: D015250:Aclarubicin