Cathepsin A

Cathepsin A, also known as lyososomal carboxypeptidase A, is a member of the serine carboxypeptidase family. Cathepsin A is a multifunctional enzyme that expresses deaminidase and esterase activities at neutral pH and carboxypeptidase activity at acidic pH. Cathepsin A is synthesized as a single-chain precursor and processed into heavy (32 kDa) and light (20 kDa) chains, which are linked by disulfide bonds.