Question

Aminopeptidase, a digestive enzyme catalyses the cleavage of

• A. Dipeptides
• B. Smaller peptides
• C. Peptones
• D. Amino acids

Answer 1

The correct option is A Dipeptides

Peptidases are the hydrolytic enzymes, which cleave peptide linkage and remove amino acids. The peptidase can be endopeptidase or an exopeptidase. The endopeptidase will cleave a peptide linkage at an internal location but exopeptidases will cleave external peptide linkages- either from the amino terminal or from the carboxyl terminal. Aminopeptidase is an exopeptidase and will remove amino acids from the amino terminal end of a peptide chain. It is complementary to carboxypeptidase, which will cleave peptide chain and remove amino acids from the carboxyl terminal. Thus the correct answer is option D.