Question

Which of the following are proteolytic enzymes?

• A. Ptyalin, trypsin, pepsin
• B. Lipase, erepsin, trypsin
• C. Erepsin, trypsin, pepsin
• D. Pepsin, nuclease, nucleotidase

Answer 1

The correct option is C Erepsin, trypsin, pepsin

Proteolytic enzymes are the protein digesting enzymes.
Erepsin is an enzyme that helps in breakdown of peptones into amino acids. It is produced by the intestinal glands in the ileum and is found in the intestinal juices. It is also produced by the pancreas.
Trypsin is present in the pancreatic juice and in turn activates the other enzymes in the pancreatic juice.
The proenzyme pepsinogen secreted in the stomach, on its exposure to HCl, gets converted into the active enzyme pepsin. Pepsin then converts proteins into proteoses and peptones.
Hence, erepsin, trypsin and pepsin are involved in protein digestion.