Co-precorrin-4 + S-adenosyl-L-methionine => Co-precorrin-5A + S-adenosyl-L-homocysteine + H(+)
co-precorrin-4 + s-adenosyl-l-methionine => co-precorrin-5a + s-adenosyl-l-homocysteine + h(+)
Co-precorrin-4 + S-adenosyl-L-methionine => Co-precorrin-5A + S-adenosyl-L-homocysteine + H(+)
co-precorrin-4 + s-adenosyl-l-methionine => co-precorrin-5a + s-adenosyl-l-homocysteine + h(+)