Carboxypeptidase E, or, CPE, is a human gene. Other names include: CPE; Carboxypeptidase H; CPH; Enkephalin convertase; Prohormone-processing carboxypeptidase; insulin granule-associated carboxypeptidase; cobalt-stimulated chromaffin granule carboxypeptidase. The encoded protein is an enzyme with an amino acid length of 476 and a mass of 53.2 kDa. Carboxypeptidase E is a member of the Peptidase M14 family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.