Trypsin and elastase are both enzymes that catalyze hydrolysis of peptide bonds.But trypsin only cuts next to lysine and elastase only cuts next to alanine.Why?

Question

Quizplus · Accepted Answer

The specificity of trypsin and elastase for lysine and alanine, respectively, is determined by the shape of their active sites. The shape of the active site for each enzyme allows it to recognize and bind specifically to the amino acid residue that it cleaves. This is why trypsin can only cut next to lysine and elastase can only cut next to alanine.

Trypsin and Elastase Are Both Enzymes That Catalyze Hydrolysis of Peptide