Dipeptidyl peptidase

From Proteopedia

Contents 1 Function 2 Relevance 3 Disease 4 Structural highlights 5 3D Structures of Dipeptidyl peptidase Function Dipeptidyl peptidase (DPP) is an enzyme which cleaves dipeptides from polypeptides. DPP-I see Cathepsin C is involved in inflammatory diseases. DPP-II is a serine protease. DPP-III acts similarly to DPP-IV. DPP-IV (or CD26) cleaves proline dipeptides from the N-termini and is associated with immune regulation. For details see: Dipeptidyl peptidase IV Saxagliptin Sitagliptin Vildagliptin Treatments:Dipeptidyl Peptidase-4 Inhibitor Pharmacokinetics Dipeptidyl Peptidase-4 Inhibitor Pharmacokinetics. DPP-XI from Porphyromonas gingivalis cleaves preferentially substrates with Asp/Glu at the P1 position[1]. Relevance DPP-IV level is alternating in certain malignancies.[2] DPP-IV inhibitors control body glucose levels and provide potential advantages in diabetes type 2 therapies.[3] Disease DPP-IV is involved in the development of various chronic liver disease like hepatitis C virus infection.[4] Structural highlights Human DPP-I contains 3 chains. Light and heavy chains forming the catalytic site and a third chain including the exclusion domain which is responsible of the exopeptidase activity of DPP-I by partially blocking the active site cleft. The inhibitors binds to a Cys residue at the active site. [5] 3D Structures of Dipeptidyl peptidase Dipeptidyl peptidase 3D structures

spinqualitylabelsall models Human glycosylated dipeptidyl peptidase I complex with inhibitor, glycerol and chloride ion (green) (PDB entry 4cdc) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

References

1. ↑ Sakamoto Y, Suzuki Y, Iizuka I, Tateoka C, Roppongi S, Fujimoto M, Inaka K, Tanaka H, Yamada M, Ohta K, Gouda H, Nonaka T, Ogasawara W, Tanaka N. Structural and mutational analyses of dipeptidyl peptidase 11 from Porphyromonas gingivalis reveal the molecular basis for strict substrate specificity. Sci Rep. 2015 Jun 9;5:11151. doi: 10.1038/srep11151. PMID:26057589 doi:http://dx.doi.org/10.1038/srep11151
2. ↑ Pro B, Dang NH. CD26/dipeptidyl peptidase IV and its role in cancer. Histol Histopathol. 2004 Oct;19(4):1345-51. PMID:15375776
3. ↑ Barnett A. DPP-4 inhibitors and their potential role in the management of type 2 diabetes. Int J Clin Pract. 2006 Nov;60(11):1454-70. PMID:17073841 doi:10.1111/j.1742-1241.2006.01178.x
4. ↑ Itou M, Kawaguchi T, Taniguchi E, Sata M. Dipeptidyl peptidase-4: a key player in chronic liver disease. World J Gastroenterol. 2013 Apr 21;19(15):2298-306. doi:, 10.3748/wjg.v19.i15.2298. PMID:23613622 doi:http://dx.doi.org/10.3748/wjg.v19.i15.2298
5. ↑ Furber M, Tiden AK, Gardiner P, Mete A, Ford R, Millichip I, Stein L, Mather A, Kinchin E, Luckhurst C, Barber S, Cage P, Sanganee H, Austin R, Chohan K, Beri R, Thong B, Wallace A, Oreffo V, Hutchinson R, Harper S, Debreczeni J, Breed J, Wissler L, Edman K. Cathepsin C Inhibitors: Property Optimization and Identification of a Clinical Candidate. J Med Chem. 2014 Mar 14. PMID:24592859 doi:http://dx.doi.org/10.1021/jm401705g