1PA3

Crystal Structure of Glutathione-S-transferase from Plasmodium falciparum


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.230 

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This is version 1.2 of the entry. See complete history


Literature

Native and inhibited structure of a Mu class-related glutathione S-transferase from Plasmodium falciparum

Perbandt, M.Burmeister, C.Walter, R.D.Betzel, C.Liebau, E.

(2004) J Biol Chem 279: 1336-1342

  • DOI: 10.1074/jbc.M309663200
  • Primary Citation of Related Structures:  
    1PA3, 1Q4J

  • PubMed Abstract: 
  • The parasite Plasmodium falciparum causes malaria tropica, the most prevailing parasitic disease worldwide, with 300-500 million infections and 1.5-2.7 million deaths/year. The emergence of strains resistant to drugs used for prophylaxis and treatment and no vaccine available makes the structural analysis of potential drug targets essential ...

    The parasite Plasmodium falciparum causes malaria tropica, the most prevailing parasitic disease worldwide, with 300-500 million infections and 1.5-2.7 million deaths/year. The emergence of strains resistant to drugs used for prophylaxis and treatment and no vaccine available makes the structural analysis of potential drug targets essential. For that reason, we analyzed the three-dimensional structure of the glutathione S-transferase from P. falciparum (Pf-GST1) in the apoform and in complex with its inhibitor S-hexyl-glutathione. The structures have been analyzed to 2.6 and 2.2 A, respectively. Pf-GST1 shares several structural features with the Mu-type GSTs and is therefore closely related to this class, even though alignments with its members display low sequence identities in the range of 20-33%. Upon S-hexyl-glutathione binding, the overall structure and the glutathione-binding site (G-site) remain almost unchanged with the exception of the flexible C terminus. The detailed comparison of the parasitic enzyme with the human host Mu-class enzyme reveals that, although the overall structure is homologue, the shape of the hydrophobic binding pocket (H-site) differs substantially. In the human enzyme, it is shielded from one side by the large Mu-loop, whereas in Pf-GST1 the Mu-loop is truncated and the space to recognize and bind voluminous substrates is extended. This structural feature can be exploited to support the design of specific and parasite-selective inhibitors.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Hamburg, Martin Luther King Platz 6, 20146 Hamburg, Germany. markus.perbandt@desy.de



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glutathione s-transferase, putativeA, B211Plasmodium falciparumMutation(s): 0 
Gene Names: GST
EC: 2.5.1.18
UniProt
Find proteins for Q8MU52 (Plasmodium falciparum)
Explore Q8MU52 
Go to UniProtKB:  Q8MU52
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.230 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.1α = 90
b = 88.2β = 90
c = 75.4γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance