precorrin-6A + acetate + S-adenosyl-L-homocysteine + 2 H(+) => precorrin-5 + S-adenosyl-L-methionine + H2O
precorrin-6a + acetate + s-adenosyl-l-homocysteine + 2 h(+) => precorrin-5 + s-adenosyl-l-methionine + h2o
precorrin-6A + acetate + S-adenosyl-L-homocysteine + 2 H(+) => precorrin-5 + S-adenosyl-L-methionine + H2O
precorrin-6a + acetate + s-adenosyl-l-homocysteine + 2 h(+) => precorrin-5 + s-adenosyl-l-methionine + h2o