What is "carboxypeptidase"

n. (context enzyme English) Any enzyme that catalyzes the hydrolysis of the terminal amino acid of a polypeptide / protein from the end that contains a free carboxyl group

A carboxypeptidase ( EC number 3.4.16 - 3.4.18) is a protease enzyme that hydrolyzes (cleaves) a peptide bond at the carboxy-terminal (C-terminal) end of a protein or peptide. (Contrast with an aminopeptidase, which cleaves peptide bonds at the other end of the protein.) Humans, animals, and plants contain several types of carboxypeptidases that have diverse functions ranging from catabolism to protein maturation.