Crystal structure of Ochrobactrum anthropi glutathione transferase Cys10Ala mutant with glutathione bound at the H-site

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.3 of the entry. See complete history


Cysteine 10 is critical for the activity of Ochrobactrum anthropi glutathione transferase and its mutation to alanine causes the preferential binding of glutathione to the H-site.

Allocati, N.Federici, L.Masulli, M.Favaloro, B.Di Ilio, C.

(2008) Proteins 71: 16-23

  • DOI: https://doi.org/10.1002/prot.21835
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The role of the evolutionarily conserved residue Cys10 in Ochrobactrum anthropi glutathione transferase (OaGST) has been examined by replacing it with an alanine. A double mutant C10A/S11A was also prepared. The effect of the replacements on the coniugating and thiotransferase activities, and on the thermal and chemical stability of the enzyme was analyzed. Our data support the view that in OaGST, in contrast with other beta class GSTs that display significant differences in the glutathione-binding site, Cys10 is a key residue for glutathione coniugating activity. Furthermore, analysis of the OaGST-Cys10Ala structure, crystallized in the presence of glutathione, reveals that this mutation causes a switch between the high-affinity G-site and a low-affinity H-site where hydrophobic cosubstrates bind and where we observe the presence of an unexpected glutathione.

  • Organizational Affiliation

    Dipartimento di Scienze Biomediche, Università G. d'Annunzio, Via dei Vestini 31, I-66013 Chieti, Italy. n.allocati@dsb.unich.it

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
glutathione S-transferase201Brucella anthropiMutation(s): 1 
Gene Names: gst
Find proteins for P81065 (Brucella anthropi)
Explore P81065 
Go to UniProtKB:  P81065
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP81065
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.373α = 90
b = 58.373β = 90
c = 214.023γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
FFTmodel building
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-01-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2021-10-20
    Changes: Database references, Derived calculations
  • Version 1.3: 2023-08-30
    Changes: Data collection, Refinement description