Crystal structure of glutathione transferase Xi 3 mutant C56S from Trametes versicolor in complex with dextran-sulfate

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.162 

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Trametes versicolor glutathione transferase Xi 3, a dual Cys-GST with catalytic specificities of both Xi and Omega classes.

Schwartz, M.Perrot, T.Deroy, A.Roret, T.Morel-Rouhier, M.Mulliert, G.Gelhaye, E.Favier, F.Didierjean, C.

(2018) FEBS Lett 592: 3163-3172

  • DOI: https://doi.org/10.1002/1873-3468.13224
  • Primary Citation of Related Structures:  
    6GC9, 6GCA, 6GCB, 6GCC, 6HTA

  • PubMed Abstract: 

    Glutathione transferases (GSTs) from the Xi and Omega classes have a catalytic cysteine residue, which gives them reductase activities. Until now, they have been assigned distinct substrates. While Xi GSTs specifically reduce glutathionyl-(hydro)quinones, Omega GSTs are specialized in the reduction of glutathionyl-acetophenones. Here, we present the biochemical and structural analysis of TvGSTX1 and TvGSTX3 isoforms from the wood-degrading fungus Trametes versicolor. TvGSTX1 reduces GS-menadione as expected, while TvGSTX3 reduces both Xi and Omega substrates. An in-depth structural analysis indicates a broader active site for TvGSTX3 due to specific differences in the nature of the residues situated in the C-terminal helix α9. This feature could explain the catalytic duality of TvGSTX3. Based on phylogenetic analysis, we propose that this duality might exist in saprophytic fungi and ascomycetes.

  • Organizational Affiliation

    CNRS, CRM2, Université de Lorraine, Nancy, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glutathione transferase Xi 3 mutant C56S
A, B
325Trametes versicolorMutation(s): 0 
Find proteins for A0A3F2YM29 (Trametes versicolor)
Explore A0A3F2YM29 
Go to UniProtKB:  A0A3F2YM29
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A3F2YM29
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
C, D
Glycosylation Resources
GlyTouCan:  G65042BF
GlyCosmos:  G65042BF
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.162 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.256α = 90
b = 72.256β = 90
c = 317.596γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
French National Research AgencyFranceANR-11-LAS-0002-01

Revision History  (Full details and data files)

  • Version 1.0: 2018-08-29
    Type: Initial release
  • Version 1.1: 2018-10-03
    Changes: Data collection, Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
  • Version 2.1: 2024-01-17
    Changes: Data collection, Database references, Refinement description