2.1.1.235 2 S-adenosyl-L-methionine + dTDP-3-amino-3,6-dideoxy-alpha-D-glucopyranose - 2.1.1.235 2 S-adenosyl-L-methionine + dTDP-3-amino-3,6-dideoxy-alpha-D-glucopyranose the enzyme is involved in biosynthesis of D-mycaminose. It is synthesized by the Gram-positive bacterium Streptomyces fradiae as a dTDP-linked sugar 2.1.1.235 2 S-adenosyl-L-methionine + dTDP-3-amino-3,6-dideoxy-alpha-D-glucopyranose the enzyme is involved in the biosynthesis of mycaminose, an essential structural component of the macrolide antibiotic tylosin poduced by Streptomyces fradiae 2.1.1.235 additional information the enzyme also catalyzes the methylation of dTDP-3-amino-3,6-dideoxy-alpha-D-galactopyranose, EC 2.1.1.236