2GBC

Native DPP-IV (CD26) from Rat


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.229 

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Literature

Crystal Structures of DPP-IV (CD26) from Rat Kidney Exhibit Flexible Accommodation of Peptidase-Selective Inhibitors.

Longenecker, K.L.Stewart, K.D.Madar, D.J.Jakob, C.G.Fry, E.H.Wilk, S.Lin, C.W.Ballaron, S.J.Stashko, M.A.Lubben, T.H.Yong, H.Pireh, D.Pei, Z.Basha, F.Wiedeman, P.E.Von Geldern, T.W.Trevillyan, J.M.Stoll, V.S.

(2006) Biochemistry 45: 7474-7482

  • DOI: 10.1021/bi060184f
  • Primary Citation of Related Structures:  
    2GBC, 2GBI, 2GBG, 2GBF

  • PubMed Abstract: 
  • Dipeptidyl peptidase IV (DPP-IV) belongs to a family of serine peptidases, and due to its indirect regulatory role in plasma glucose modulation, DPP-IV has become an attractive pharmaceutical target for diabetes therapy. DPP-IV inactivates the glucagon-l ...

    Dipeptidyl peptidase IV (DPP-IV) belongs to a family of serine peptidases, and due to its indirect regulatory role in plasma glucose modulation, DPP-IV has become an attractive pharmaceutical target for diabetes therapy. DPP-IV inactivates the glucagon-like peptide (GLP-1) and several other naturally produced bioactive peptides that contain preferentially a proline or alanine residue in the second amino acid sequence position by cleaving the N-terminal dipeptide. To elucidate the details of the active site for structure-based drug design, we crystallized a natural source preparation of DPP-IV isolated from rat kidney and determined its three-dimensional structure using X-ray diffraction techniques. With a high degree of similarity to structures of human DPP-IV, the active site architecture provides important details for the design of inhibitory compounds, and structures of inhibitor-protein complexes offer detailed insight into three-dimensional structure-activity relationships that include a conformational change of Tyr548. Such accommodation is exemplified by the response to chemical substitution on 2-cyanopyrrolidine inhibitors at the 5 position, which conveys inhibitory selectivity for DPP-IV over closely related homologues. A similar conformational change is also observed in the complex with an unrelated synthetic inhibitor containing a xanthine core that is also selective for DPP-IV. These results suggest the conformational flexibility of Tyr548 is unique among protein family members and may be utilized in drug design to achieve peptidase selectivity.


    Organizational Affiliation

    Department of Structural Biology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois 60064-6098, USA. Kenton.Longenecker@Abbott.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Dipeptidyl peptidase 4 AB730Rattus norvegicusMutation(s): 0 
Gene Names: Dpp4Cd26
EC: 3.4.15.5 (PDB Primary Data), 3.4.14.5 (UniProt)
Find proteins for P14740 (Rattus norvegicus)
Explore P14740 
Go to UniProtKB:  P14740
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.229 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 208.152α = 90
b = 208.152β = 90
c = 208.152γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
SOLVEphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-07-04
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary