Definition of proenzyme in English:

Share this entry


Pronunciation: /prōˈenˌzīm/


A biologically inactive substance that is metabolized into an enzyme.
Example sentences
  • Covalent modification of pre-existing pools of inactive proenzymes produces active enzymes.
  • These death proteases are part of a proteolytic cascade activating proenzymes into active proteases.
  • Protein digestion begins in the stomach, where a proenzyme called pepsinogen is secreted, autocatalytically converted to Pepsin A, and used for the first step of proteolysis.

For editors and proofreaders

Syllabification: pro·en·zyme

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.