CPA5 is a symbol for the gene, Carboxypeptidase A5, in humans. Other names include: Carboxypeptidase A5 . The encoded protein is an enzyme with an amino acid length of 436 and a mass of 49.0 kDa. Other isoforms may exist. CPA5 is a member of the Peptidase M14 family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Chicken.