Dipeptidyl peptidase III (DPP III, EC 3.4.14.4) is a monozinc metalloexopeptidase that hydrolyzes dipeptides from the N-terminus of peptides consisting three or more amino acids. Recently, DPP has attracted great interest scientists, and numerous studies have been conducted showing it involved in regulation various physiological processes. Since only metalloenzyme among dipeptidyl peptidases, w...