Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 43939.66 
• Atom Count: 2823 
• Residue Count: 393 
• Unique protein chains: 1

2B0M

Human dihydroorotate dehydrogenase bound to a novel inhibitor

• DOI: 10.2210/pdb2B0M/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2005-09-14 Released: 2005-09-27 
• Deposition Author(s): Hurt, D.E., Sutton, A.E., Clardy, J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.249 
• R-Value Work: 0.218 

Literature

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

• PubMed: 16406782 
• DOI: 10.1016/j.bmcl.2005.12.029


• 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.

---

Related Citations: 

• Structure of Plasmodium falciparum dihyroorotate dehydrogenase with a bound inhibitor
  Hurt, D.E.,Widom, J.,Clardy, J.
  () TO BE PUBLISHED --: --




---

Organizational Affiliation: 

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

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Dihydroorotate dehydrogenase, mitochondrial	A	393	Homo sapiens	Mutation(s): 0  Gene Names: DHODH EC: 1.3.5.2
Find proteins for Q02127 (Homo sapiens) Go to Gene View: DHODH Go to UniProtKB:  Q02127

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
FMN	A	FLAVIN MONONUCLEOTIDE RIBOFLAVIN MONOPHOSPHATE C17 H21 N4 O9 P FVTCRASFADXXNN-SCRDCRAPSA-N
201	A	3-AMIDO-5-BIPHENYL-BENZOIC ACID 5-(AMINOCARBONYL)-1,1':4',1''-TERPHENYL-3-CARBOXYLIC ACID C20 H15 N O3 LAZPCGBRHLARSI-UHFFFAOYSA-N
ORO	A	OROTIC ACID C5 H4 N2 O4 PXQPEWDEAKTCGB-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
201	Ki: 2800 nM (100) BINDINGDB

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.249 
• R-Value Work: 0.218 
• Space Group: P 3₂ 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 90.398	α = 90.00
b = 90.398	β = 90.00
c = 123.332	γ = 120.00

Software Package:

Software Name	Purpose
HKL-2000	data reduction
HKL-2000	data collection
CNS	refinement
SCALEPACK	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-09-14 
• Released Date: 2005-09-27 
• Deposition Author(s): Hurt, D.E., Sutton, A.E., Clardy, J.

Revision History 

• Version 1.0: 2005-09-27
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance