ID 2.1.1.289 DE cobalt-precorrin-7 (C(5))-methyltransferase. CA Co-precorrin-7 + S-adenosyl-L-methionine = Co-precorrin-8X + H(+) + CA S-adenosyl-L-homocysteine. CC -!- This enzyme catalyzes the methylation at C-5 of cobalt-precorrin-7, CC a step in the anaerobic (early cobalt insertion) adenosylcobalamin CC biosynthesis pathway. CC -!- The equivalent activity in the aerobic adenosylcobalamin biosynthesis CC pathway is catalyzed by the bifunctional enzyme EC 2.1.1.132. DR O87694, CBIET_PRIMG; Q58917, CBIE_METJA ; P0A2H2, CBIE_SALTI ; DR P0A2H1, CBIE_SALTY ; //