zymogen

listen to the pronunciation of zymogen
Английский Язык - Английский Язык
A proenzyme, or enzyme precursor, which requires a biochemical change (i.e. hydrolysis) to become an active form of the enzyme
or proenzyme Any of a class of proteins that are secreted by cells and are inactive precursors of enzymes. Transformation into active enzymes occurs as one or more peptide bonds in the zymogen are cleaved. Examples include trypsinogen and chymotrypsinogen, secreted by the pancreas and converted by proteolysis in the small intestine into the active enzymes trypsin and chymotrypsin; and numerous coagulation factors
A mother substance, or antecedent, of an enzyme or chemical ferment; -- applied to such substances as, not being themselves actual ferments, may by internal changes give rise to a ferment
{i} substance which converts into an enzyme under certain conditions (Biology)
A mother substance, or antecedent, of an enzyme or chemical ferment; applied to such substances as, not being themselves actual ferments, may by internal changes give rise to a ferment