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 
  • R-Value Observed: 0.159 

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This is version 1.3 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

  • DOI: 10.1021/bi015964x
  • Primary Citation of Related Structures:  
    1GWC

  • 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 cloned and functionally characterized a group of GSTUs from wheat treated with fenchlorazole-ethyl, a herbicide safener ...

    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: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GLUTATHIONE S-TRANSFERASE TSI-1A, B, C230Aegilops tauschiiMutation(s): 0 
Gene Names: F775_30353
EC: 2.5.1.18
UniProt
Find proteins for O04941 (Aegilops tauschii)
Explore O04941 
Go to UniProtKB:  O04941
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO04941
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.982α = 90
b = 152.389β = 90
c = 146.772γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
EPMRphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-06-06
    Type: Initial release
  • Version 1.1: 2011-08-17
    Changes: Database references, Derived calculations, Other, Refinement description, Version format compliance
  • Version 1.2: 2018-02-28
    Changes: Source and taxonomy
  • Version 1.3: 2019-05-08
    Changes: Data collection, Derived calculations, Experimental preparation