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Puromycin was inactivated without the presence of acetyl coenzyme A when incubated with extracts of blasticidin S-producing Streptomyces morookaensis. The two derivatives from puromycin, contained in the reaction mixture, were detected by thin-layer chromatography, purified by high performance liquid chromatography and analyzed for determination of the chemical structures by 1 H-nuclear magnetic...
Extracts of a bleomycin (Bm)-producing Streptomyces verticillus ATCC15003 were found to possess an acetyltransferase activity which inactivates Bm in the presence of acetyl coenzyme A. DNA fragments of S. verticillus were introduced into S. lividans by cloning and transformants selected for resistance to Bm. Deletion mapping and subcloning of a 6-kb DNA fragment showed the presence of two resistance...
The gene encoding streptomycin 6-kinase involved in the self-resistance of the streptomycin-producing Streptomyces griseus HUT 6037 was cloned in the plasmid vector pIJ703. The resulting plasmid, pSP6, contained 2.5 kb inserts of S. griseus DNA. When streptomycin-susceptible S. lividans 1326 was retransformed with pSP6, all transformants produced streptomycin 6-kinase. Addition of streptomycin to...
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