Which of the following hydrolyzes proteins only on the C=O side of tryptophan, phenylalanine and tyrosine?

Name: Which of the following hydrolyzes proteins only on the C=O side of tryptophan, phenylalanine and tyrosine?
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Chymotrypsin is a serine protease that cleaves peptide bonds on the C-terminal side of aromatic amino acids such as tryptophan, phenylalanine, and tyrosine. Carboxypeptidase, pepsin, and trypsin cleave peptide bonds on different sites than chymotrypsin.

Which of the Following Hydrolyzes Proteins Only on the C=O