precorrin-7 + S-adenosyl-L-methionine = precorrin-8X + S-adenosyl-L-homocysteine + 2 H(+)
precorrin-7 + s-adenosyl-l-methionine = precorrin-8x + s-adenosyl-l-homocysteine + 2 h(+)
precorrin-7 + S-adenosyl-L-methionine = precorrin-8X + S-adenosyl-L-homocysteine + 2 H(+)
precorrin-7 + s-adenosyl-l-methionine = precorrin-8x + s-adenosyl-l-homocysteine + 2 h(+)