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