[methyl-Co(III) methanol-specific corrinoid protein]:coenzyme M methyltransferase
[methyl-Co(III) methylamine-specific corrinoid protein]:coenzyme M methyltransferase activity
apigenin 7-O-methyltransferase activity
C-methyltransferase activity +
caffeine synthase activity
cirsimaritin 4'-O-methyltransferase activity
cobalt-factor II C20-methyltransferase activity
cobalt-precorrin-3 C17-methyltransferase activity
cobalt-precorrin-5B C1-methyltransferase activity
cobalt-precorrin-6B C5-methyltransferase activity
cobalt-precorrin-7 C15-methyltransferase activity
corydaline synthase activity
daphnetin-8-O-methyltransferase activity
demethylmenaquinone methyltransferase activity
Catalysis of the reaction: a 2-demethylmenaquinol + S-adenosyl-L-methionine = a menaquinol + H+ + S-adenosyl-L-homocysteine. Reaction substrates can have varying polyprenyl side chain length.