1GWC

The structure of a tau class glutathione S-transferase from wheat, active in herbicide detoxification


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.157 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of a Tau Class Glutathione S-Transferase from Wheat Active in Herbicide Detoxification

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

(2002) Biochemistry 41: 7008


  • PubMed Abstract: 
  • Glutathione S-transferases (GSTs) from the phi (GSTF) and tau (GSTU) classes are unique to plants and play important roles in stress tolerance and secondary metabolism as well as catalyzing the detoxification of herbicides in crops and weeds. We have ...

    Glutathione S-transferases (GSTs) from the phi (GSTF) and tau (GSTU) classes are unique to plants and play important roles in stress tolerance and secondary metabolism as well as catalyzing the detoxification of herbicides in crops and weeds. We have cloned and functionally characterized a group of GSTUs from wheat treated with fenchlorazole-ethyl, a herbicide safener. One of these enzymes, TaGSTU4-4, was highly active in conjugating the chemically distinct wheat herbicides fenoxaprop and dimethenamid. The structure of TaGSTU4-4 has been determined at 2.2 A resolution in complex with S-hexylglutathione. This enzyme is the first tau class GST structure to be determined and most closely resembles the omega class GSTs, but without the unique N-terminal extension or active site cysteine. The X-ray structure identifies key amino acid residues in the hydrophobic binding site and provides insights into the substrate specificity of these enzymes.


    Related Citations: 
    • Partial Characterization of Glutathione S-Transferases from Wheat (Triticum Spp.) And
      Riechers, D.E.,Irzyk, G.P.,Jones, S.S.,Fuerst, E.P.
      (1997) Plant Physiol. 114: 1461


    Organizational Affiliation

    Department of Chemistry, University of Glasgow, Glasgow, G12 8QQ, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUTATHIONE S-TRANSFERASE TSI-1
A, B, C
230Aegilops tauschiiEC: 2.5.1.18
Find proteins for O04941 (Aegilops tauschii)
Go to UniProtKB:  O04941
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GTX
Query on GTX

Download SDF File 
Download CCD File 
A, B, C
S-HEXYLGLUTATHIONE
C16 H30 N3 O6 S
HXJDWCWJDCOHDG-RYUDHWBXSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.157 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 87.982α = 90.00
b = 152.389β = 90.00
c = 146.772γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
EPMRphasing
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-06-06
    Type: Initial release
  • Version 1.1: 2011-08-17
    Type: Database references, Derived calculations, Other, Refinement description, Version format compliance