Cloning, expression and medium optimization of validamycin glycosyltransferase from Streptomyces hygroscopicus var. jinggangensis for the biotransformation of validoxylamine A to produce validamycin A using free resting cells
Keywords: Validamycin A; Validoxylamine A; Streptomyces hygroscopicus; Validamycin glycosyltransferase;