May be involved in cell-cell interactions. No carboxypeptidase activity was found yet. Binds 1 zinc ion per subunit. Strongly expressed in testis and spleen. Moderatly expressed in salivary gland, brain, heart, lung, and kidney. Extremely low expression in liver and muscle. No expression in eye, adrenal, and white adipose tissues. First expressed at 13.5 dpc, in the meninges, nasal mesenchyme, primordial cartilage and skeletal structures. Belongs to the peptidase M14 family.