Practice question
Question
Which enzyme selectively removes the C-terminal amino acid from a peptide?
Explanation
Carboxypeptidase is the accurate response regarding enzymatic activity or regulation described in this question. Enzymes are biological catalysts that accelerate reactions by lowering activation energy through specific substrate binding and transition state stabilization. In the context of Protein, Carboxypeptidase plays a specific catalytic or regulatory role determined by its active site configuration and mechanism of action. The other options (Aminopeptidase, Trypsin, and Pepsin) are either different enzymes with distinct substrate specificities, act through different mechanisms, or are involved in separate metabolic pathways.