Human dihydroorotate dehydrogenase bound to a novel inhibitor

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.218 

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Ligand Structure Quality Assessment 

This is version 1.3 of the entry. See complete history


Brequinar derivatives and species-specific drug design for dihydroorotate dehydrogenase.

Hurt, D.E.Sutton, A.E.Clardy, J.

(2006) Bioorg Med Chem Lett 16: 1610-1615

  • DOI: https://doi.org/10.1016/j.bmcl.2005.12.029
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Therapeutic agents brequinar sodium and leflunomide (Arava) work by binding in a hydrophobic tunnel formed by a highly variable N-terminus of family 2 dihydroorotate dehydrogenase (DHODH). The X-ray crystallographic structure of an analog of brequinar bound to human DHODH was determined. In silico screening of a library of compounds suggested another subset of brequinar analogs that do not inhibit human DHODH as potentially effective inhibitors of Plasmodium falciparum DHODH.

  • Organizational Affiliation

    Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14850, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dihydroorotate dehydrogenase, mitochondrial393Homo sapiensMutation(s): 0 
Gene Names: DHODH
UniProt & NIH Common Fund Data Resources
Find proteins for Q02127 (Homo sapiens)
Explore Q02127 
Go to UniProtKB:  Q02127
GTEx:  ENSG00000102967 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ02127
Sequence Annotations
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
201 BindingDB:  2B0M Ki: 2800 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.218 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.398α = 90
b = 90.398β = 90
c = 123.332γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-09-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-08-23
    Changes: Data collection, Database references, Derived calculations, Refinement description