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Home > Zymogen


 

A zymogen is an inactive enzyme pre-cursor. 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 the pancreatic trypsinogen which becomes trypsin and chymotrypsinogen which becomes chymotrypsin.

The proteasome is also a zymogen. The catalytic beta subunits are cleaved to reveal the reactive threonine.



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