Bovine pancreatic trypsin (BPT)

Bovine pancreatic trypsin is a serine protease produced in the pancreas of Bos taurus that catalyzes the hydrolysis of peptide bonds, specifically at the carboxyl side of lysine and arginine residues (UniProt: P00760). It is synthesized as an inactive zymogen, trypsinogen, and activated in the duodenum by enteropeptidase, where it further activates other digestive enzymes like chymotrypsin and carboxypeptidase (PubMed: 11351128). While its primary biological function is protein digestion, it serves as a vital model in structural biology and enzymology for studying the S1 family of peptidases (Wikipedia: Trypsin). In medicine, bovine trypsin and its inhibitors have significant therapeutic relevance; for instance, bovine pancreatic trypsin inhibitor (BPTI), known as aprotinin, is used to reduce perioperative bleeding and manage inflammatory responses (DrugBank: DB00032). Dysregulation or premature activation of trypsin within the pancreas is a primary driver of pancreatitis, making the enzyme a target for various synthetic inhibitors like camostat and nafamostat (PubMed: 24637205). Additionally, bovine trypsin is widely used in laboratory settings for cell dissociation and proteomics applications due to its high specificity and efficiency (PubMed: 16045358). The enzyme's structure, characterized by a catalytic triad of His57, Asp102, and Ser195, remains the gold standard for understanding serine protease mechanisms (Wikipedia: Trypsin).

Other names

Trypsin-1Cationic trypsinTrypsinogenSerine protease 1Beta-trypsin

Competitive inhibition of the serine protease active site, specifically blocking the catalytic triad (His57, Asp102, and Ser195) to prevent the cleavage of peptide bonds at the carboxyl side of lysine and arginine residues (PubMed: 11351128).