Trypsinogen

Trypsinogen (EC 3.4.23.18/20/21/23/24/26) is the precursor form or zymogen of the pancreatic enzyme trypsin. It is found in pancreatic juice, along with amylase, lipase, and chymotrypsinogen. It is activated by enteropeptidase, which is found in the intestinal mucosa, to form trypsin. Once activated, the trypsin can activate more trypsinogen into trypsin. Trypsin cleaves the peptide bond on the carboxyl side of basic amino acids.

Serum trypsinogen is measured using a blood test. High levels are seen in acute pancreatitis, and cystic fibrosis.

Functions

 * Protein digestion.