1JLV

Anopheles dirus species B glutathione S-transferases 1-3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 
    0.231 (Depositor), 0.220 (DCC) 
  • R-Value Work: 
    0.223 (Depositor), 0.220 (DCC) 
  • R-Value Observed: 
    0.223 (Depositor) 

Starting Model: other
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Ligand Structure Quality Assessment 

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This is version 1.4 of the entry. See complete history


Literature

The crystal structures of glutathione S-transferases isozymes 1-3 and 1-4 from Anopheles dirus species B.

Oakley, A.J.Harnnoi, T.Udomsinprasert, R.Jirajaroenrat, K.Ketterman, A.J.Wilce, M.C.

(2001) Protein Sci 10: 2176-2185

  • DOI: https://doi.org/10.1110/ps.ps.21201
  • Primary Citation of Related Structures:  
    1JLV, 1JLW

  • PubMed Abstract: 

    Glutathione S-transferases (GSTs) are dimeric proteins that play an important role in cellular detoxification. Four GSTs from the mosquito Anopheles dirus species B (Ad), an important malaria vector in South East Asia, are produced by alternate splicing of a single transcription product and were previously shown to have detoxifying activity towards pesticides such as DDT. We have determined the crystal structures for two of these alternatively spliced proteins, AdGST1-3 (complexed with glutathione) and AdGST1-4 (apo form), at 1.75 and 2.45 A resolution, respectively. These GST isozymes show differences from the related GST from the Australian sheep blowfly Lucilia cuprina; in particular, the presence of a C-terminal helix forming part of the active site. This helix causes the active site of the Anopheles GSTs to be enclosed. The glutathione-binding helix alpha2 and flanking residues are disordered in the AdGST1-4 (apo) structure, yet ordered in the AdGST1-3 (GSH-bound) structure, suggesting that insect GSTs operate with an induced fit mechanism similar to that found in the plant phi- and human pi-class GSTs. Despite the high overall sequence identities, the active site residues of AdGST1-4 and AdGST1-3 have different conformations.


  • Organizational Affiliation

    Department of Pharmacology/Crystallography Centre, University of Western Australia, Crawley 6009, Australia.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
glutathione transferase GST1-3
A, B, C, D, E
209Anopheles cracensMutation(s): 0 
EC: 2.5.1.18
UniProt
Find proteins for Q7KIF2 (Anopheles cracens)
Explore Q7KIF2 
Go to UniProtKB:  Q7KIF2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7KIF2
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free:  0.231 (Depositor), 0.220 (DCC) 
  • R-Value Work:  0.223 (Depositor), 0.220 (DCC) 
  • R-Value Observed: 0.223 (Depositor) 
Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.81α = 90
b = 87.81β = 90
c = 166.1γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

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Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted GSHClick on this verticalbar to view details

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-07-16
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Derived calculations
  • Version 1.4: 2024-04-03
    Changes: Refinement description