Enterokinase is responsible for the conversion of: 

The correct answer is the conversion of trypsinogen into trypsin.

Key Points

• Role of Enterokinase:
  • Enterokinase, also known as enteropeptidase, is an enzyme produced by the cells lining the duodenum (the first part of the small intestine).
  • Its primary function is to convert trypsinogen, an inactive precursor, into trypsin, an active enzyme.
  • Trypsin then plays a critical role in the digestive process by breaking down proteins into smaller peptides.

Additional Information

• Pepsinogen into Pepsin:
  • Pepsinogen is converted into pepsin in the stomach by the action of hydrochloric acid, not by enterokinase.
  • Pepsin is an enzyme that helps digest proteins in the stomach.
• Prorenin into Renin:
  • Prorenin is converted into renin, an enzyme involved in regulating blood pressure, but this conversion is not facilitated by enterokinase.
  • The activation of prorenin to renin occurs in the kidneys.
• Caseinogen into Casein:
  • Caseinogen is a precursor to casein, a protein found in milk, but this conversion is not mediated by enterokinase.
  • The conversion of caseinogen to casein typically occurs in the presence of rennet enzymes during cheese production.