S-Adenosyl-L-methionine: macrocin O-methyltransferase activities in a series of Streptomyces fradiae mutants that produce different levels of the macrolide antibiotic tylosin.

S-Adenosyl-L-methionine: macrocin O-methyltransferase activities in a series of Streptomyces fradiae mutants that produce different levels of the macrolide antibiotic tylosin.