4J03 | pdb_00004j03

Crystal structure of human soluble epoxide hydrolase complexed with fulvestrant

• PDB DOI: https://doi.org/10.2210/pdb4J03/pdb

• Classification: Hydrolase/Hydrolase inhibitor
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2013-01-30 Released: 2013-06-05 
• Deposition Author(s): Morisseau, C., Pakhomova, S., Hwang, S.H., Newcomer, M.E., Hammock, B.D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.92 Å
• R-Value Free: 
  0.250 (Depositor), 0.218 (DCC) 
• R-Value Work: 
  0.188 (Depositor) 
• R-Value Observed: 
  0.191 (Depositor) 

Starting Model: experimental

Literature

Inhibition of soluble epoxide hydrolase by fulvestrant and sulfoxides.

Morisseau, C., Pakhomova, S., Hwang, S.H., Newcomer, M.E., Hammock, B.D.

(2013) Bioorg Med Chem Lett 23: 3818-3821

• PubMed: 23684894 
• DOI: https://doi.org/10.1016/j.bmcl.2013.04.083
• Primary Citation Related Structures: 
  4J03


• PubMed Abstract: 
  

  The soluble epoxide hydrolase (sEH) is a key enzyme in the metabolism of epoxy-fatty acids, signaling molecules involved in numerous biologies. Toward finding novel inhibitors of sEH, a library of known drugs was tested for inhibition of sEH. We found that fulvestrant, an anticancer agent, is a potent (KI=26 nM) competitive inhibitor of sEH. From this observation, we found that alkyl-sulfoxides represent a new kind of pharmacophore for the inhibition of sEH.

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Organizational Affiliation: 
• Department of Entomology and UCD Comprehensive Cancer Center, University of California, One Shields Avenue, Davis, CA 95616, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 63.41 kDa 
• Atom Count: 4,382 
• Modeled Residue Count: 548 
• Deposited Residue Count: 555 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bifunctional epoxide hydrolase 2	A	555	Homo sapiens	Mutation(s): 0  Gene Names: EPHX2 EC: 3.3.2.10 (PDB Primary Data), 3.1.3.76 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P34913 (Homo sapiens) Explore P34913  Go to UniProtKB:  P34913
PHAROS:  P34913 GTEx:  ENSG00000120915

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FVS	D [auth A]	(7beta,9beta,13alpha,17beta)-7-{9-[(R)-(4,4,5,5,5-pentafluoropentyl)sulfinyl]nonyl}estra-1(10),2,4-triene-3,17-diol C32 H47 F5 O3 S VWUXBMIQPBEWFH-CIAKRVSBSA-N
PO4	B [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.92 Å
• R-Value Free:  0.250 (Depositor), 0.218 (DCC) 
• R-Value Work:  0.188 (Depositor) 
• R-Value Observed: 0.191 (Depositor) 

Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 92.507	α = 90
b = 92.507	β = 90
c = 243.811	γ = 120

Software Package:

Software Name	Purpose
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-06-05 
Deposition Author(s): Morisseau, C., Pakhomova, S., Hwang, S.H., Newcomer, M.E., Hammock, B.D.

Revision History  

• Version 1.0: 2013-06-05
  Type: Initial release
  
• Version 1.1: 2013-06-19
  Changes: Database references
• Version 1.2: 2013-06-26
  Changes: Database references
• Version 1.3: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description