D defs.my
Entry 1 sense Webster, 1913

proenzyme

· pro·en·zyme · IPA
01 n. Any one of a class of proteins that are converted, in the normal course of cellular metabolism, into one or more active enzymes; also calle…
  1. 1.
    Any one of a class of proteins that are converted, in the normal course of cellular metabolism, into one or more active enzymes; also called zymogen. The conversion usually is due to a specific cleavage of a peptide bond by another enzyme, or may be due to acid.(Bioch.) Also: zymogen