Antigens, CD26

A Serine Protease that Catalyses the release of an N-terminal dipeptide. Several biologically-active Peptides have been identified as dipeptidyl peptidase 4 substrates including Incretins; Neuropeptides; and Chemokines. The protein is also found bound to Adenosine Deaminase on the T-Cell surface and is believed to play a Role in T-Cell activation.