title: Biosynthetic studies on the macrolide antibiotic turimycin using 14C-labeled precursors.
abstract: Using a strain of Streptomyces hygroscopicus JA 6599 several 14C-compounds were investigates as potential precursors of the macrolide antibiotic turimycin followed by partial degradation to localize the radioactivity. L-Methionine-14C-methyl and n-butyrate-1-14C were incorporated exclusively and in a specific manner. The incorporation ratios were dependent on the addition time of the precursors. Studies of the incorporation of acylmycaroses and demycarosyl turimycin into the antibiotic are also reported.
mesh_terms: D000900:Anti-Bacterial Agents / Q000096:biosynthesis*; D001673:Biodegradation, Environmental; D002250:Carbon Radioisotopes; D003470:Culture Media; D005285:Fermentation; D007783:Lactones / Q000096:biosynthesis; D013302:Streptomyces / Q000378:metabolism*; D013997:Time Factors
chemical_list: D000900:Anti-Bacterial Agents; D002250:Carbon Radioisotopes; D003470:Culture Media; D007783:Lactones