3PPU

Crystal structure of the glutathione-S-transferase Xi from Phanerochaete chrysosporium


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Glutathione transferases of Phanerochaete chrysosporium: S-glutathionyl-p-hydroquinone reductase belongs to a new structural class.

Meux, E.Prosper, P.Ngadin, A.Didierjean, C.Morel, M.Dumarcay, S.Lamant, T.Jacquot, J.P.Favier, F.Gelhaye, E.

(2011) J.Biol.Chem. 286: 9162-9173

  • DOI: 10.1074/jbc.M110.194548

  • PubMed Abstract: 
  • The white rot fungus Phanerochaete chrysosporium, a saprophytic basidiomycete, possesses a large number of cytosolic glutathione transferases, eight of them showing similarity to the Omega class. PcGSTO1 (subclass I, the bacterial homologs of which w ...

    The white rot fungus Phanerochaete chrysosporium, a saprophytic basidiomycete, possesses a large number of cytosolic glutathione transferases, eight of them showing similarity to the Omega class. PcGSTO1 (subclass I, the bacterial homologs of which were recently proposed, based on their enzymatic function, to constitute a new class of glutathione transferase named S-glutathionyl-(chloro)hydroquinone reductases) and PcGSTO3 (subclass II related to mammalian homologs) have been investigated in this study. Biochemical investigations demonstrate that both enzymes are able to catalyze deglutathionylation reactions thanks to the presence of a catalytic cysteinyl residue. This reaction leads to the formation of a disulfide bridge between the conserved cysteine and the removed glutathione from their substrate. The substrate specificity of each isoform differs. In particular PcGSTO1, in contrast to PcGSTO3, was found to catalyze deglutathionylation of S-glutathionyl-p-hydroquinone substrates. The three-dimensional structure of PcGSTO1 presented here confirms the hypothesis that it belongs not only to a new biological class but also to a new structural class that we propose to name GST xi. Indeed, it shows specific features, the most striking ones being a new dimerization mode and a catalytic site that is buried due to the presence of long loops and that contains the catalytic cysteine.


    Organizational Affiliation

    UMR 1136 INRA-UHP Interactions Arbres/Micro-Organismes, IFR110 Ecosystèmes Forestiers, Agroressources, Bioprocédés et Alimentation, Nancy Université, Faculté des Sciences et Techniques, BP 70239, 54506 Vandoeuvre-les-Nancy, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glutathione-S-transferase
A, B
352Phanerochaete chrysosporiumMutation(s): 0 
Gene Names: GTO1
Find proteins for B3VQJ7 (Phanerochaete chrysosporium)
Go to UniProtKB:  B3VQJ7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GSH
Query on GSH

Download SDF File 
Download CCD File 
A
GLUTATHIONE
C10 H17 N3 O6 S
RWSXRVCMGQZWBV-WDSKDSINSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.191 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 166.823α = 90.00
b = 70.331β = 98.79
c = 72.566γ = 90.00
Software Package:
Software NamePurpose
SHELXphasing
Xnemodata collection
SHELXmodel building
REFMACrefinement
SCALAdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-12-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2013-04-24
    Type: Database references