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Carboxypeptidase B (CPB)


Carboxypeptidase B (CPB) (EC3.4.17.2) is an exocrine protease, belonging to the family of metallocarboxypeptidase A and carboxypeptidase B (CPA / CPB). Each molecule contains a Zn atom, which can selectively hydrolyze arginine and lysine at the carboxyl end of protein or peptide. Carboxypeptidase B preferentially cleaves basic amino acids, but CPB can also cleave some non basic amino acids.