Which of the following is a medium-sized globular protein that acts as a pancreatic serine protease found in the digestive system of many vertebrates?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Trypsin.
Trypsin is a medium-sized globular protein and a pancreatic serine protease. It plays a critical role in the digestive system of many vertebrates.
Trypsin is synthesized in the pancreas as an inactive precursor called trypsinogen. When trypsinogen is secreted into the small intestine, it is activated to trypsin by the enzyme enteropeptidase (also known as enterokinase).
Trypsin cleaves peptide bonds in proteins, specifically after the amino acids lysine and arginine, aiding in protein digestion.