Coenzyme:Asubstancethat enhances the action of anenzyme. (An enzyme is aproteinthat functions as acatalystto mediate andspeedachemical reaction).
Coenzymes are small molecules. They cannot by themselves catalyze a reaction but they can helpenzymesto do so.Intechnical terms, coenzymes areorganicnonprotein molecules that bind with the proteinmolecule(apoenzyme) to form the active enzyme (holoenzyme).
A number of thewater-soluble vitamins such asvitaminsB1, B2 and B6 serve as coenzymes.
