Crystal structure of putative glutathione transferase from Coccidioides immitis bound to glutathione

Experimental Data Snapshot

  • Resolution: 1.85 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Structures of a putative zeta-class glutathione S-transferase from the pathogenic fungus Coccidioides immitis.

Edwards, T.E.Bryan, C.M.Leibly, D.J.Dieterich, S.H.Abendroth, J.Sankaran, B.Sivam, D.Staker, B.L.Van Voorhis, W.C.Myler, P.J.Stewart, L.J.

(2011) Acta Crystallogr Sect F Struct Biol Cryst Commun 67: 1038-1043

  • DOI: https://doi.org/10.1107/S1744309111009493
  • Primary Citation of Related Structures:  
    3LG6, 3N5O

  • PubMed Abstract: 

    Coccidioides immitis is a pathogenic fungus populating the southwestern United States and is a causative agent of coccidioidomycosis, sometimes referred to as Valley Fever. Although the genome of this fungus has been sequenced, many operons are not properly annotated. Crystal structures are presented for a putative uncharacterized protein that shares sequence similarity with ζ-class glutathione S-transferases (GSTs) in both apo and glutathione-bound forms. The apo structure reveals a nonsymmetric homodimer with each protomer comprising two subdomains: a C-terminal helical domain and an N-terminal thioredoxin-like domain that is common to all GSTs. Half-site binding is observed in the glutathione-bound form. Considerable movement of some components of the active site relative to the glutathione-free form was observed, indicating an induced-fit mechanism for cofactor binding. The sequence homology, structure and half-site occupancy imply that the protein is a ζ-class glutathione S-transferase, a maleylacetoacetate isomerase (MAAI).

  • Organizational Affiliation

    Seattle Structural Genomics Center for Infectious Disease, USA. tedwards@embios.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
glutathione transferase
A, B
235Coccidioides immitisMutation(s): 0 
Gene Names: COI
Find proteins for D2YW48 (Coccidioides immitis (strain RS))
Explore D2YW48 
Go to UniProtKB:  D2YW48
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD2YW48
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.61α = 90
b = 110.93β = 90
c = 168.49γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PDB_EXTRACTdata extraction
StructureStudiodata collection
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-06-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-09-21
    Changes: Database references
  • Version 1.3: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description