What is another word for apoenzyme?
Pronunciation: [ɐpˈə͡ʊnza͡ɪm] (IPA) 
Synonyms for the word "apoenzyme" include inactive enzyme, precursor enzyme, and proenzyme. An apoenzyme usually requires the presence of a coenzyme, inorganic ion, or another organic molecule for its enzymatic activity to be fully expressed. The apoenzyme/coenzyme complex is known as a holoenzyme. Precursor enzyme or proenzyme refers to an enzyme that, in its inactive form, requires a specific chemical modification to become fully functional. In the case of proenzymes, the activation of the enzyme usually occurs via proteolytic cleavage, either by the enzyme itself or by another protease. Overall, these synonyms for apoenzyme are useful for describing the various stages of enzyme activation and their dependence on other molecules.
