ID 2.1.1.237 DE mycinamicin III 3''-O-methyltransferase. CA mycinamicin III + S-adenosyl-L-methionine = H(+) + mycinamicin IV + CA S-adenosyl-L-homocysteine. CC -!- The enzyme is involved in the biosynthesis of mycinamicin macrolide CC antibiotics. DR Q49492, MYCF_MICGR ; //