Reevaluation of the Final Steps in the Biosynthesis of Blasticidin S by Streptomyces griseochromogenes and Identification of a Novel Self-Resistance Mechanism
作者:Qibo Zhang、Martha C Cone、Steven J Gould、T Mark Zabriskie
DOI:10.1016/s0040-4020(99)01060-1
日期:2000.1
steps in the biosynthesis of the antifungal peptidyl-nucleoside blasticidinS (3) have been revised to include a novel self-resistance mechanism wherein the previously proposed final precursor, demethylblasticidin S (7), is modified with a leucine residue yielding leucyldemethylblasticidin S (10) which exhibits reduced antibiotic activity. Methylation of 10 yields leucylblasticidin S (9) which can