Apoenzyme vs. Proenzyme
Difference Between Apoenzyme and Proenzyme
(enzyme) An inactive haloenzyme lacking a cofactor.
(biochemistry) Any inactive precursor of an enzyme that is converted to an enzyme by proteolysis; a zymogen
a protein that combines with a coenzyme to form an active enzyme
any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active