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