1AXD

STRUCTURE OF GLUTATHIONE S-TRANSFERASE-I BOUND WITH THE LIGAND LACTOYLGLUTATHIONE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Work: 0.174 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of herbicide-detoxifying maize glutathione S-transferase-I in complex with lactoylglutathione: evidence for an induced-fit mechanism.

Neuefeind, T.Huber, R.Dasenbrock, H.Prade, L.Bieseler, B.

(1997) J.Mol.Biol. 274: 446-453


  • PubMed Abstract: 
  • Glutathione S-transferases (GSTs) -I and -III are involved in herbicide metabolism in maize and have been intensively studied. Starting with plant tissue from Zea mays var. mutin recombinant GST-I was prepared by heterologous expression in Escherichi ...

    Glutathione S-transferases (GSTs) -I and -III are involved in herbicide metabolism in maize and have been intensively studied. Starting with plant tissue from Zea mays var. mutin recombinant GST-I was prepared by heterologous expression in Escherichia coli. The enzyme was crystallized in the presence of lactoylglutathione, a ligand formerly never observed in a GST structure and known as an intermediate of the pharmacologically relevant glyoxalase system. The crystal structure of GST-I has been determined at 2.5 A resolution and exhibits the GST-typical dimer of two identical subunits, each consisting of 214 residues. Compared with other plant GSTs the three-dimensional structure of GST-I primarily shows structural differences in the hydrophobic substrate binding site, the linker segment and the C-terminal region. Furthermore, a comparison of the ligand-bound GST-I structure with the apo structure of GST-III indicates the movement of a ten-residue loop upon binding of the ligand to the active site. This is the first structure-based evidence for an induced fit mechanism of glutathione S-transferases, which has previously been postulated for class pi enzymes. Together with GST-III, GST-I may explain herbicide resistance and selectivity in maize as well as in other agronomic relevant crops.


    Organizational Affiliation

    Max-Planck-Institut für Biochemie, Am Klopferspitz, Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUTATHIONE S-TRANSFERASE I
A, B
209Zea maysGene Names: GST1
EC: 2.5.1.18
Find proteins for P12653 (Zea mays)
Go to UniProtKB:  P12653
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
LACTOYLGLUTATHIONE
C, D
3N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
GGL
Query on GGL
C, D
L-gamma-peptide, C-delta linkingC5 H9 N O4

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CYW
Query on CYW
C, D
L-PEPTIDE LINKINGC6 H11 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Work: 0.174 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 54.540α = 90.00
b = 78.910β = 107.24
c = 55.610γ = 90.00
Software Package:
Software NamePurpose
CCP4data reduction
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-10-28
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Database references, Derived calculations, Non-polymer description, Version format compliance