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Zymogen

Inactive form of an enzyme.

Also: Proenzyme

Catalytically inactive precursor activated by proteolytic cleavage. Digestive proteases (pepsinogen, trypsinogen, chymotrypsinogen, procarboxypeptidases) and clotting factors are stored and secreted as zymogens.

How one textbook covers it

  • Advanced Nutrition and Human Metabolism, 8th ed. (Gropper) — Glossary

    Catalytically inactive precursor activated by proteolytic cleavage. Digestive proteases (pepsinogen, trypsinogen, chymotrypsinogen, procarboxypeptidases) and clotting factors are stored and secreted as zymogens.

Related terms

Endopeptidase, Proteases