1GUH

Structure determination and refinement of human alpha class glutathione transferase A1-1, and a comparison with the MU and PI class enzymes


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Work: 0.229 
  • R-Value Observed: 0.229 

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This is version 1.2 of the entry. See complete history


Literature

Structure determination and refinement of human alpha class glutathione transferase A1-1, and a comparison with the Mu and Pi class enzymes.

Sinning, I.Kleywegt, G.J.Cowan, S.W.Reinemer, P.Dirr, H.W.Huber, R.Gilliland, G.L.Armstrong, R.N.Ji, X.Board, P.G.Olin, B.Mannervik, B.Jones, T.A.

(1993) J Mol Biol 232: 192-212

  • DOI: 10.1006/jmbi.1993.1376
  • Primary Citation of Related Structures:  
    1GUH

  • PubMed Abstract: 
  • The crystal structure of human alpha class glutathione transferase A1-1 has been determined and refined to a resolution of 2.6 A. There are two copies of the dimeric enzyme in the asymmetric unit. Each monomer is built from two domains. A bound inhibitor, S-benzyl-glutathione, is primarily associated with one of these domains via a network of hydrogen bonds and salt-links ...

    The crystal structure of human alpha class glutathione transferase A1-1 has been determined and refined to a resolution of 2.6 A. There are two copies of the dimeric enzyme in the asymmetric unit. Each monomer is built from two domains. A bound inhibitor, S-benzyl-glutathione, is primarily associated with one of these domains via a network of hydrogen bonds and salt-links. In particular, the sulphur atom of the inhibitor forms a hydrogen bond to the hydroxyl group of Tyr9 and the guanido group of Arg15. The benzyl group of the inhibitor is completely buried in a hydrophobic pocket. The structure shows an overall similarity to the mu and pi class enzymes particularly in the glutathione-binding domain". The main difference concerns the extended C terminus of the alpha class enzyme which forms an extra alpha-helix that blocks one entrance to the active site and makes up part of the substrate binding site.


    Organizational Affiliation

    Department of Molecular Biology, Uppsala University Biomedical Center, Sweden.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GLUTATHIONE S-TRANSFERASE A1-1A, B, C, D221Homo sapiensMutation(s): 0 
Gene Names: GSTA1
EC: 2.5.1.18 (PDB Primary Data), 1.11.1 (UniProt), 5.3.3 (UniProt)
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Find proteins for P08263 (Homo sapiens)
Explore P08263 
Go to UniProtKB:  P08263
PHAROS:  P08263
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Work: 0.229 
  • R-Value Observed: 0.229 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.8α = 90
b = 95.4β = 92.4
c = 105.2γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance