ubiquinol-10 + S-adenosyl-L-homocysteine + H(+) => 3-demethylubiquinol-10 + S-adenosyl-L-methionine
ubiquinol-10 + s-adenosyl-l-homocysteine + h(+) => 3-demethylubiquinol-10 + s-adenosyl-l-methionine
ubiquinol-10 + S-adenosyl-L-homocysteine + H(+) => 3-demethylubiquinol-10 + S-adenosyl-L-methionine
ubiquinol-10 + s-adenosyl-l-homocysteine + h(+) => 3-demethylubiquinol-10 + s-adenosyl-l-methionine