Microbial O-phosphorylation of macrolide antibiotics.
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چکیده
منابع مشابه
Microbial O-phosphorylation of macrolide antibiotics.
Crude enzymepreparations of Streptomyces coelicolor (Miiller), UC 5240 in the presence of ATP and Mg2+ catalyzed the conversion of oleandomycin, tylosin, leucomycin A3 and a mixture of spiramycins I, II and III to their antibiotically inactive I'-O-phosphates.10 Under identical conditions, erythromycin was converted to anhydroerythromycin-Z'-O-phosphate.10 As O-phosphorylation of aminocyclitols...
متن کاملEnzymatic phosphorylation of macrolide antibiotics.
Five macrolide antibiotics (erythromycin A, 1; oleandomycin, 3a; tylosin, 4a; spiramycins, 5a; leucomycin A3, 6a) have been phosphorylated enzymatically using cell-free extracts derived from Streptomyces coelicolor UC 5240. The necessary cofactors and the rates of the conversion have been determined.
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Addition of clindamycin to whole-cell cultures of Streptomyces coelicolor MUller resulted in the loss of in vitro activity against organisms sensitive to clindamycin. Incubation of such culture filtrates with alkaline phosphatase generated a biologically active material identified as clindamycin. Fermentation broths containing inactivated clindamycin yielded clindamycin 3-phosphate, the structu...
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The mode of action of the polyene antibiotics is reviewed together with the effect of genetic and environmental factors on sensitive organisms. The future prospects of polyenes in the treatment of systemic mycoses are considered.
متن کاملStereochemical problems in macrolide antibiotics.
Since 1950, well over fifty macrolides have been derived from various Actinomycetes in screening laboratories located at many corners of the world. Among the most intensely studied macrolides are those produced on a commercial scale (erythromycin, oleandomycin, tylosin, leucomycin and spiramycin) as well as examples of particular historical/scientific importance (Magnamycin, pikromycin, narbomy...
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ژورنال
عنوان ژورنال: The Journal of Antibiotics
سال: 1989
ISSN: 0021-8820,1881-1469
DOI: 10.7164/antibiotics.42.132