1E6B

Crystal structure of a Zeta class glutathione S-transferase from Arabidopsis thaliana


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Structure of a Zeta Class Glutathione S-Transferase from Arabidopsis Thaliana: Characterisation of a Gst with Novel Active-Site Architecture and a Putative Role in Tyrosine Catabolism.

Thom, R.Dixon, D.P.Edwards, R.Cole, D.J.Lapthorn, A.J.

(2001) J.Mol.Biol. 308: 949

  • DOI: 10.1006/jmbi.2001.4638

  • PubMed Abstract: 
  • The cis-trans isomerisation of maleylacetoacetate to fumarylacetoacetate is the penultimate step in the tyrosine/phenylalanine catabolic pathway and has recently been shown to be catalysed by glutathione S-transferase enzymes belonging to the zeta cl ...

    The cis-trans isomerisation of maleylacetoacetate to fumarylacetoacetate is the penultimate step in the tyrosine/phenylalanine catabolic pathway and has recently been shown to be catalysed by glutathione S-transferase enzymes belonging to the zeta class. Given this primary metabolic role it is unsurprising that zeta class glutathione S-transferases are well conserved over a considerable period of evolution, being found in vertebrates, plants, insects and fungi. The structure of this glutathione S-transferase, cloned from Arabidopsis thaliana, has been solved by single isomorphous replacement with anomalous scattering and refined to a final crystallographic R-factor of 19.6% using data from 25.0 A to 1.65 A. The zeta class enzyme adopts the canonical glutathione S-transferase fold and forms a homodimer with each subunit consisting of 221 residues. In agreement with structures of glutathione S-transferases from the theta and phi classes, a serine residue (Ser17) is present in the active site, at a position that would allow it to stabilise the thiolate anion of glutathione. Site-directed mutagenesis of this residue confirms its importance in catalysis. In addition, the role of a highly conserved cysteine residue (Cys19) present in the active site of the zeta class glutathione S-transferase enzymes is discussed.


    Related Citations: 
    • Characterisation of a Zeta Class Glutathione Transferase from Arabidopsis Thaliana with a Putative Role in Tyrosine Catabolism
      Dixon, D.P.,Cole, D.J.,Edwards, R.
      (2000) Arch.Biochem.Biophys. 384: 407


    Organizational Affiliation

    Department of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUTATHIONE S-TRANSFERASE
A
221Arabidopsis thalianaGene Names: GSTZ1 (GST18, GSTZ)
EC: 2.5.1.18, 5.2.1.-
Find proteins for Q9ZVQ3 (Arabidopsis thaliana)
Go to Gene View: GSTZ1
Go to UniProtKB:  Q9ZVQ3
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BME
Query on BME

Download SDF File 
Download CCD File 
A
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.196 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 75.164α = 90.00
b = 75.164β = 90.00
c = 140.520γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
REFMACrefinement
CCP4phasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-06-11
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance