Co-precorrin-3 + S-adenosyl-L-methionine <=> Co-precorrin-4 + S-adenosyl-L-homocysteine
co-precorrin-3 + s-adenosyl-l-methionine <=> co-precorrin-4 + s-adenosyl-l-homocysteine
Co-precorrin-3 + S-adenosyl-L-methionine <=> Co-precorrin-4 + S-adenosyl-L-homocysteine
co-precorrin-3 + s-adenosyl-l-methionine <=> co-precorrin-4 + s-adenosyl-l-homocysteine