Tags: Enzyme.
Carboxypeptidase A usually refers to the pancreatic exopeptidase that hydrolyzes peptide bonds of C-terminal residues with aromatic or aliphatic side-chains. Most scientists in the field now refer to this enzyme as CPA1 and to a related pancreatic carboxypeptidase as CPA2. In addition there are 4 other mammalian enzymes named CPA-3 through CPA-6 and none of these are expressed in the pancreas. Instead these other CPA-like enzymes have diverse functions.