1HNB

CRYSTAL STRUCTURE OF HUMAN CLASS MU GLUTATHIONE TRANSFERASE GSTM2-2: EFFECTS OF LATTICE PACKING ON CONFORMATIONAL HETEROGENEITY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of human class mu glutathione transferase GSTM2-2. Effects of lattice packing on conformational heterogeneity.

Raghunathan, S.Chandross, R.J.Kretsinger, R.H.Allison, T.J.Penington, C.J.Rule, G.S.

(1994) J.Mol.Biol. 238: 815-832

  • DOI: 10.1006/jmbi.1994.1336
  • Primary Citation of Related Structures:  1HNA, 1HNC
  • Also Cited By: 2AB6

  • PubMed Abstract: 
  • The structures of three crystal forms of the class mu human glutathione transferase GSTM2-2 have been determined. X-ray phase information was obtained independently from molecular replacement and from anomalous scattering by a single isomorphous deri ...

    The structures of three crystal forms of the class mu human glutathione transferase GSTM2-2 have been determined. X-ray phase information was obtained independently from molecular replacement and from anomalous scattering by a single isomorphous derivative. One crystal form contains a single monomer in the asymmetric unit and has been refined to 1.85 A with an overall R factor of 22.6%. The second form contains a single dimer in the asymmetric unit and has been refined to 3.5 A with an R factor of 20.7%. The third form contains two dimers in the asymmetric unit and has been refined to 3.0 A with an R factor of 25.0%. Although all three crystal forms were grown from solutions that contained glutathione-dinitrobenzene, electron density can only be seen for the glutathione portion of the ligand. The first 202 residues in the seven crystallographically independent monomers of GSTM2-2 are essentially identical in structure. However, heterogeneity in the conformation of the side-chain of Tyr115 is observed in the different monomers. The tertiary structure of residues 1-202 is similar to that of the corresponding region in the class mu isoform of glutathione transferase from rat, GST3-3 (Ji et al. (1992), Biochemistry, 31, 10169-10184). However, significant differences in the conformation of the two enzymes have been observed in the region of the active site that binds hydrophobic substrates. These differences include a 2 A shift in the carboxy terminus of a helix, and significant heterogeneity in the conformation of the last 15 residues of the carboxy terminus. The conformation and degree of disorder of the last 15 residues correlates with the extent of protein-protein contacts within the unit cell.


    Related Citations: 
    • Mapping of the Substrate-Binding Site of a Human Class Mu Glutathione Transferase Using Nuclear Magnetic Resonance Spectroscopy
      Penington, C.R.,Rule, G.S.
      (1992) Biochemistry 31: 2912
    • Cloning, Expression, and Characterization of a Class Mu Glutathione Transferase from Human Muscle, the Product of the Gst4 Locus
      Vorachek, W.R.,Pearson, W.R.,Rule, G.S.
      (1991) Proc.Natl.Acad.Sci.USA 88: 443


    Organizational Affiliation

    Department of Biology, University of Virginia, Charlottesville 22908.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUTATHIONE S-TRANSFERASE
A, B
217Homo sapiensGene Names: GSTM2 (GST4)
EC: 2.5.1.18
Find proteins for P28161 (Homo sapiens)
Go to Gene View: GSTM2
Go to UniProtKB:  P28161
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDN
Query on GDN

Download SDF File 
Download CCD File 
A, B
GLUTATHIONE S-(2,4 DINITROBENZENE)
C16 H19 N5 O10 S
FXEUKVKGTKDDIQ-UWVGGRQHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Work: 0.207 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.000α = 90.00
b = 86.080β = 90.00
c = 105.850γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance