cob(I)alamin + S-adenosyl-L-methionine <=> methylcob(III)alamin + S-adenosyl-L-homocysteine
cob(i)alamin + s-adenosyl-l-methionine <=> methylcob(iii)alamin + s-adenosyl-l-homocysteine
cob(I)alamin + S-adenosyl-L-methionine <=> methylcob(III)alamin + S-adenosyl-L-homocysteine
cob(i)alamin + s-adenosyl-l-methionine <=> methylcob(iii)alamin + s-adenosyl-l-homocysteine