Crystal structure of glutathione transferase Omega 2C from Trametes versicolor in complex with oxyresveratrol

Experimental Data Snapshot

  • Resolution: 1.84 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 

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Diversity of Omega Glutathione Transferases in mushroom-forming fungi revealed by phylogenetic, transcriptomic, biochemical and structural approaches.

Perrot, T.Schwartz, M.Deroy, A.Girardet, J.M.Kohler, A.Morel-Rouhier, M.Favier, F.Gelhaye, E.Didierjean, C.

(2021) Fungal Genet Biol 148: 103506-103506

  • DOI: https://doi.org/10.1016/j.fgb.2020.103506
  • Primary Citation of Related Structures:  
    6HJS, 6SR8, 6SR9, 6SRA, 6SRB

  • PubMed Abstract: 

    The Omega class of glutathione transferases (GSTs) forms a distinct class within the cytosolic GST superfamily because most of them possess a catalytic cysteine residue. The human GST Omega 1 isoform was first characterized twenty years ago, but it took years of work to clarify the roles of the human isoforms. Concerning the kingdom of fungi, little is known about the cellular functions of Omega glutathione transferases (GSTOs), although they are widely represented in some of these organisms. In this study, we re-assess the phylogeny and the classification of GSTOs based on 240 genomes of mushroom-forming fungi (Agaricomycetes). We observe that the number of GSTOs is not only extended in the order of Polyporales but also in other orders such as Boletales. Our analysis leads to a new classification in which the fungal GSTOs are divided into two Types A and B. The catalytic residue of Type-A is either cysteine or serine, while that of Type-B is cysteine. The present study focuses on Trametes versicolor GSTO isoforms that possess a catalytic cysteine residue. Transcriptomic data show that Type-A GSTOs are constitutive enzymes while Type-B are inducible ones. The crystallographic analysis reveals substantial structural differences between the two types while they have similar biochemical profiles in the tested conditions. Additionally, these enzymes have the ability to bind antioxidant molecules such as wood polyphenols in two possible binding sites as observed from X-ray structures. The multiplication of GSTOs could allow fungal organisms to adapt more easily to new environments.

  • Organizational Affiliation

    Université de Lorraine, INRAE, IAM, Nancy, France; Institute for Plant Cell Biology and Biotechnology, Heinrich Heine University, 40225 Düsseldorf, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Uncharacterized protein
A, B
245Trametes versicolor FP-101664 SS1Mutation(s): 0 
Gene Names: TRAVEDRAFT_67635
Find proteins for R7S7J5 (Trametes versicolor (strain FP-101664))
Explore R7S7J5 
Go to UniProtKB:  R7S7J5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupR7S7J5
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.84 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.516α = 90
b = 142.624β = 116.44
c = 65.431γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 

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: 2020-09-30
    Type: Initial release
  • Version 1.1: 2021-01-27
    Changes: Database references
  • Version 1.2: 2021-02-03
    Changes: Database references
  • Version 1.3: 2024-01-24
    Changes: Data collection, Database references, Refinement description