Dipeptidyl-peptidase 2 is an enzyme that in humans is encoded by the DPP7 gene.

The protein encoded by this gene is a post-proline cleaving aminopeptidase expressed in quiescent lymphocytes. The resting lymphocytes are maintained through suppression of apoptosis, a state which is disrupted by inhibition of this novel serine protease. The enzyme has strong sequence homology with prolyl carboxypeptidase and is active at both acidic and neutral pH.

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