2PVQ

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • 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


This is version 1.1 of the entry. See complete history


Literature

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: 10.1002/prot.21835
  • Structures With Same Primary Citation

  • 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 coni ...

    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



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
glutathione S-transferase
A
201Ochrobactrum anthropiMutation(s): 1 
Gene Names: gst
EC: 2.5.1.18
Find proteins for P81065 (Ochrobactrum anthropi)
Go to UniProtKB:  P81065
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GSH
Query on GSH

Download CCD File 
A
GLUTATHIONE
C10 H17 N3 O6 S
RWSXRVCMGQZWBV-WDSKDSINSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • 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
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
FFTphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-01-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance