1CQZ

CRYSTAL STRUCTURE OF MURINE SOLUBLE EPOXIDE HYDROLASE.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Detoxification of environmental mutagens and carcinogens: structure, mechanism, and evolution of liver epoxide hydrolase.

Argiriadi, M.A.Morisseau, C.Hammock, B.D.Christianson, D.W.

(1999) Proc.Natl.Acad.Sci.USA 96: 10637-10642

  • Primary Citation of Related Structures:  1CR6

  • PubMed Abstract: 
  • The crystal structure of recombinant murine liver cytosolic epoxide hydrolase (EC 3.3.2.3) has been determined at 2.8-A resolution. The binding of a nanomolar affinity inhibitor confirms the active site location in the C-terminal domain; this domain ...

    The crystal structure of recombinant murine liver cytosolic epoxide hydrolase (EC 3.3.2.3) has been determined at 2.8-A resolution. The binding of a nanomolar affinity inhibitor confirms the active site location in the C-terminal domain; this domain is similar to that of haloalkane dehalogenase and shares the alpha/beta hydrolase fold. A structure-based mechanism is proposed that illuminates the unique chemical strategy for the activation of endogenous and man-made epoxide substrates for hydrolysis and detoxification. Surprisingly, a vestigial active site is found in the N-terminal domain similar to that of another enzyme of halocarbon metabolism, haloacid dehalogenase. Although the vestigial active site does not participate in epoxide hydrolysis, the vestigial domain plays a critical structural role by stabilizing the dimer in a distinctive domain-swapped architecture. Given the genetic and structural relationships among these enzymes of xenobiotic metabolism, a structure-based evolutionary sequence is postulated.


    Related Citations: 
    • Gene evolution of epoxide hydrolases and recommended nomenclature
      Beetham, J.K.,Grant, D.,Arand, M.,Garbarino, J.,Kiyosue, T.,Pinot, F.,Oesch, F.,Belknap, W.R.,Shinozaki, K.,Hammock, B.D.
      (1995) DNA Cell Biol. 14: 61
    • Molecular cloning and expression of murine liver soluble epoxide hydrolase
      Grant, D.F.,Storms, D.H.,Hammock, B.D.
      (1993) J.Biol.Chem. 268: 17628


    Organizational Affiliation

    Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EPOXIDE HYDROLASE
A, B
554Mus musculusGene Names: Ephx2 (Eph2)
EC: 3.1.3.76, 3.3.2.10
Find proteins for P34914 (Mus musculus)
Go to UniProtKB:  P34914
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.214 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 151.900α = 90.00
b = 143.000β = 90.00
c = 60.000γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-11-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance