The Enzyme Database

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Accepted name: dipeptidyl-peptidase IV
Reaction: Release of an N-terminal dipeptide, Xaa-Yaa┼Zaa-, from a polypeptide, preferentially when Yaa is Pro, provided Zaa is neither Pro nor hydroxyproline
Other name(s): dipeptidyl aminopeptidase IV; Xaa-Pro-dipeptidyl-aminopeptidase; Gly-Pro naphthylamidase; postproline dipeptidyl aminopeptidase IV; lymphocyte antigen CD26; glycoprotein GP110; dipeptidyl peptidase IV; glycylproline aminopeptidase; glycylproline aminopeptidase; X-prolyl dipeptidyl aminopeptidase; pep X; leukocyte antigen CD26; glycylprolyl dipeptidylaminopeptidase; dipeptidyl-peptide hydrolase; glycylprolyl aminopeptidase; dipeptidyl-aminopeptidase IV; DPP IV/CD26; amino acyl-prolyl dipeptidyl aminopeptidase; T cell triggering molecule Tp103; X-PDAP
Comments: A homodimer. An integral protein of the plasma membrane of lymphocytes and other mammalian cells, in peptidase family S9 (prolyl oligopeptidase family). The reaction is similar to that of the unrelated EC Xaa-Pro dipeptidyl-peptidase of lactococci
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, MEROPS, PDB, CAS registry number: 54249-88-6
1.  Misumi, Y., Hayashi, Y., Arakawa, F. and Ikehara, Y. Molecular cloning and sequence analysis of human dipeptidyl peptidase IV, a serine proteinase on the cell surface. Biochim. Biophys. Acta 1131 (1992) 333–336. [PMID: 1352704]
2.  David, F., Bernard, A.-M., Pierres, M. and Marguet, D. Identification of serine 624, aspartic acid 702, and histidine 734 as the catalytic triad residues of mouse dipeptidyl-peptidase IV (CD26). A member of a novel family of nonclassical serine hydrolases. J. Biol. Chem. 268 (1993) 17247–17252. [PMID: 8102366]
3.  Ikehara, Y., Ogata, S. and Misumi, Y. Dipeptidyl-peptidase IV from rat liver. Methods Enzymol. 244 (1994) 215–227. [PMID: 7845210]
[EC created 1981, modified 1996]

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