Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 49.63 kDa 
• Atom Count: 3710 
• Modelled Residue Count: 420 
• Deposited Residue Count: 422 
• Unique protein chains: 1

1GNW

STRUCTURE OF GLUTATHIONE S-TRANSFERASE

• PDB DOI: 10.2210/pdb1GNW/pdb

• Classification: TRANSFERASE
• Organism(s): Arabidopsis thaliana
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1996-09-15 Released: 1997-09-17 
• Deposition Author(s): Reinemer, P., Prade, L., Hof, P., Neuefeind, T., Huber, R., Palme, K., Bartunik, H.D., Bieseler, B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Work: 0.175 
• R-Value Observed: 0.175 

Literature

Three-dimensional structure of glutathione S-transferase from Arabidopsis thaliana at 2.2 A resolution: structural characterization of herbicide-conjugating plant glutathione S-transferases and a novel active site architecture.

Reinemer, P., Prade, L., Hof, P., Neuefeind, T., Huber, R., Zettl, R., Palme, K., Schell, J., Koelln, I., Bartunik, H.D., Bieseler, B.

(1996) J Mol Biol 255: 289-309

• PubMed: 8551521 
• DOI: 10.1006/jmbi.1996.0024
• Primary Citation of Related Structures:  
  1GNW


• PubMed Abstract: 
  

Glutathione S-transferases (GST) are a family of multifunctional enzymes involved in the metabolization of a broad variety of xenobiotics and reactive endogenous compounds. The interest in plant glutathione S-transferases may be attributed to their agronomic value, since it has been demonstrated that glutathione conjugation for a variety of herbicides is the major resistance and selectivity factor in plants. The three-dimensional structure of glutathione S-transferase from the plant Arabidopsis thaliana has been solved by multiple isomorphous replacement and multiwavelength anomalous dispersion techniques at 3 A resolution and refined to a final crystallographic R-factor of 17.5% using data from 8 to 2.2 A resolution. The enzyme forms a dimer of two identical subunits each consisting of 211 residues. Each subunit is characterized by the GST-typical modular structure with two spatially distinct domains. Domain I consists of a central four-stranded beta-sheet flanked on one side by two alpha-helices and on the other side by an irregular segment containing three short 3(10)-helices, while domain II is entirely helical. The dimeric molecule is globular with a prominent large cavity formed between the two subunits. The active site is located in a cleft situated between domains I and II and each subunit binds two molecules of a competitive inhibitor S-hexylglutathione. Both hexyl moieties are oriented parallel and fill the H-subsite of the enzyme's active site. The glutathione peptide of one inhibitor, termed productive binding, occupies the G-subsite with multiple interactions similar to those observed for other glutathione S-transferases, while the glutathione backbone of the second inhibitor, termed unproductive binding, exhibits only weak interactions mediated by two polar contacts. A most striking difference from the mammalian glutathione S-transferases, which share a conserved catalytic tyrosine residue, is the lack of this tyrosine in the active site of the plant glutathione S-transferase.

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Organizational Affiliation: 

Bayer AG, GB Pflanzenschutz (PF-F Biotechnologie) Pflanzenschutzzentrum Monheim, Leverkusen, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GLUTATHIONE S-TRANSFERASE	A, B	211	Arabidopsis thaliana	Mutation(s): 0  Gene Names: GSTF2, PM24.1, At4g02520, T10P11.18 EC: 2.5.1.18
UniProt
Find proteins for P46422 (Arabidopsis thaliana) Explore P46422  Go to UniProtKB:  P46422

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GTX	C [auth A], D [auth A], E [auth B], F [auth B]	S-HEXYLGLUTATHIONE C16 H30 N3 O6 S HXJDWCWJDCOHDG-RYUDHWBXSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Work: 0.175 
• R-Value Observed: 0.175 
• Space Group: P 6₃

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 113.3	α = 90
b = 113.3	β = 90
c = 69.96	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
MADNES	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-09-15 
• Released Date: 1997-09-17 
Deposition Author(s): Reinemer, P., Prade, L., Hof, P., Neuefeind, T., Huber, R., Palme, K., Bartunik, H.D., Bieseler, B.

Revision History  

• Version 1.0: 1997-09-17
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-04-18
  Changes: Advisory, Data collection, Other