a 3-demethylubiquinone + S-adenosyl-L-methionine <=> a ubiquinone + S-adenosyl-L-homocysteine
a 3-demethylubiquinone + s-adenosyl-l-methionine <=> a ubiquinone + s-adenosyl-l-homocysteine
a 3-demethylubiquinone + S-adenosyl-L-methionine <=> a ubiquinone + S-adenosyl-L-homocysteine
a 3-demethylubiquinone + s-adenosyl-l-methionine <=> a ubiquinone + s-adenosyl-l-homocysteine