3G0X

Human dihydroorotate dehydrogenase in complex with a leflunomide derivative inhibitor 5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structure-based design, synthesis, and characterization of inhibitors of human and Plasmodium falciparum dihydroorotate dehydrogenases

Davies, M.Heikkila, T.McConkey, G.A.Fishwick, C.W.G.Parsons, M.R.Johnson, A.P.

(2009) J Med Chem 52: 2683-2693

  • DOI: https://doi.org/10.1021/jm800963t
  • Primary Citation of Related Structures:  
    3F1Q, 3FJ6, 3FJL, 3G0U, 3G0X

  • PubMed Abstract: 

    Pyrimidine biosynthesis is an attractive drug target in a variety of organisms, including humans and the malaria parasite Plasmodium falciparum. Dihydroorotate dehydrogenase, an enzyme catalyzing the only redox reaction of the pyrimidine biosynthesis pathway, is a well-characterized target for chemotherapeutical intervention. In this study, we have applied SPROUT-LeadOpt, a software package for structure-based drug discovery and lead optimization, to improve the binding of the active metabolite of the anti-inflammatory drug leflunomide to the target cavities of the P. falciparum and human dihydroorotate dehydrogenases. Following synthesis of a library of compounds based upon the SPROUT-optimized molecular scaffolds, a series of inhibitors generally showing good inhibitory activity was obtained, in keeping with the SPROUT-LeadOpt predictions. Furthermore, cocrystal structures of five of these SPROUT-designed inhibitors bound in the ubiquinone binding cavity of the human dihydroorotate dehydrogenase are also analyzed.


  • Organizational Affiliation

    School of Chemistry, Faculty of Biological Sciences, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dihydroorotate dehydrogenase367Homo sapiensMutation(s): 0 
EC: 1.3.3.1 (PDB Primary Data), 1.3.5.2 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q02127 (Homo sapiens)
Explore Q02127 
Go to UniProtKB:  Q02127
PHAROS:  Q02127
GTEx:  ENSG00000102967 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ02127
Sequence Annotations
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
MD7 BindingDB:  3G0X Ki: 7 (nM) from 1 assay(s)
IC50: min: 53, max: 1580 (nM) from 3 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.045α = 90
b = 91.045β = 90
c = 123.762γ = 120
Software Package:
Software NamePurpose
DNAdata collection
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-06-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2024-03-20
    Changes: Data collection, Database references, Derived calculations