1GSU

AN AVIAN CLASS-MU GLUTATHIONE S-TRANSFERASE, CGSTM1-1 AT 1.94 ANGSTROM RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The three-dimensional structure of an avian class-mu glutathione S-transferase, cGSTM1-1 at 1.94 A resolution.

Sun, Y.J.Kuan, I.C.Tam, M.F.Hsiao, C.D.

(1998) J.Mol.Biol. 278: 239-252

  • DOI: 10.1006/jmbi.1998.1716

  • PubMed Abstract: 
  • Glutathione S-transferase cGSTM1-1, an avian class-mu enzyme with high sequence identity with rGSTM3-3, was expressed heterologously in Escherichia coli. The three-dimensional structure of this protein that co-crystallized with an inhibitor, S-hexylg ...

    Glutathione S-transferase cGSTM1-1, an avian class-mu enzyme with high sequence identity with rGSTM3-3, was expressed heterologously in Escherichia coli. The three-dimensional structure of this protein that co-crystallized with an inhibitor, S-hexylglutathione, was determined by the molecular replacement method and refined to 1.94 A resolution. The three-dimensional structure and the folding topology of the dimeric cGSTM1-1 closely resembles those of other class-mu GSTs. The bound inhibitor, S-hexylglutathione, orients in disparate directions in the two subunits. The combined space occupied by the hexyl moiety of the inhibitors overlaps with that reported for rGSTM1-1 co-crystallized with (9 S,10 S)-9-(S-glutathionyl)-10-hydroxy-9,10-dihydrophenanthrene. Conformational differences at a flexible loop (residue 35 to 40) were also observed between the crystal structures of cGSTM1-1 and rGSTM1-1.cGSTM1-1 has the highest epoxidase activity among all the class-mu enzymes reported. Tyr115, has been identified as a residue that participates in the epoxidase activity of class-mu glutathione S-transferase and is conserved in cGSTM1-1. The epoxidase and trans-4-phenyl-3-buten-2-one conjugating activity of cGSTM1-1 are decreased drastically but not abolished by replacing Tyr115 with phenylalanine. The specificity constant of the cGSTM1-1(Y115F) mutant, with 1-chloro-2,4-dinitrobenzene as substrate, is 15-fold higher than that of the wild-type enzyme.


    Related Citations: 
    • The Three-Dimensional Structure of a Glutathione S-Transferase from the Mu Gene Class. Structural Analysis of the Binary Complex of Isoenzyme 3-3 and Glutathione at 2.2-A Resolution
      Ji, X.,Zhang, P.,Armstrong, R.N.,Gilliland, G.L.
      (1992) Biochemistry 31: 10169
    • 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
    • Structure and Function of the Xenobiotic Substrate Binding Site of a Glutathione S-Transferase as Revealed by X-Ray Crystallographic Analysis of Product Complexes with the Diastereomers of 9-(S-Glutathionyl)-10-Hydroxy-9,10-Dihydrophenanthrene
      Ji, X.,Johnson, W.W.,Sesay, M.A.,Dickert, L.,Prasad, S.M.,Ammon, H.L.,Armstrong, R.N.,Gilliland, G.L.
      (1994) Biochemistry 33: 1043


    Organizational Affiliation

    Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan, 11529, Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CLASS-MU GLUTATHIONE S-TRANSFERASE
A, B
219Gallus gallusGene Names: GSTM2
EC: 2.5.1.18
Find proteins for P20136 (Gallus gallus)
Go to Gene View: GSTM2
Go to UniProtKB:  P20136
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTX
Query on GTX

Download SDF File 
Download CCD File 
A, B
S-HEXYLGLUTATHIONE
C16 H30 N3 O6 S
HXJDWCWJDCOHDG-RYUDHWBXSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.210 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 61.300α = 90.00
b = 88.000β = 90.00
c = 93.500γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
DENZOdata reduction
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-03-04
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance