Zymogen
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(Redirected from Zymogens)
A zymogen or a proenzyme, is an inactive enzyme precursor. A zymogen requires a biochemical change, such as a hydrolysis reaction revealing the active site, for it to become an active enzyme.
Examples of zymogens are trypsinogen, chymotrypsinogen, pepsinogen, most of the proteins of the coagulation system, some of the proteins of the complement system, the caspases.