Trypsin is a digestive enzyme that hydrolyzes peptide bonds only when the carbonyl group in the amide bond comes from Lys or Arg. What fragments result when the peptide Gly-Lys-Arg-Ala-Ala-Arg is hydrolyzed by trypsin?

Question

Quizplus · Accepted Answer

Trypsin cleaves peptide bonds at the carboxyl side of lysine (Lys) and arginine (Arg) residues. Therefore, the peptide Gly-Lys-Arg-Ala-Ala-Arg will be cleaved after each Lys and Arg, resulting in the fragments Gly-Lys, Arg, and Ala-Ala-Arg.

Trypsin Is a Digestive Enzyme That Hydrolyzes Peptide Bonds Only