Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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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: 47764.66 
• Atom Count: 3343 
• Residue Count: 418 
• Unique protein chains: 1

9GSS

HUMAN GLUTATHIONE S-TRANSFERASE P1-1, COMPLEX WITH S-HEXYL GLUTATHIONE

• DOI: 10.2210/pdb9GSS/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 1997-08-14 Released: 1998-09-16 
• Deposition Author(s): Oakley, A., Parker, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.97 Å
• R-Value Free: 0.232 
• R-Value Work: 0.194 

Literature

The structures of human glutathione transferase P1-1 in complex with glutathione and various inhibitors at high resolution.

Oakley, A.J., Bello, M.L., Battistoni, A., Ricci, G., Rossjohn, J., Villar, H.O., Parker, M.W.

(1997) J.Mol.Biol. 274: 84-100

• PubMed: 9398518 
• Primary Citation of Related Structures:  
  8GSS, 7GSS, 6GSS, 5GSS, 10GS


• PubMed Abstract: 
  

The human pi-class glutathione S-transferase (hGST P1-1) is a target for structure-based inhibitor design with the aim of developing drugs that could be used as adjuvants in chemotherapeutic treatment. Here we present seven crystal structures of the enzyme in complex with substrate (glutathione) and two inhibitors (S-hexyl glutathione and gamma-glutamyl- (S-benzyl)cysteinyl-D-phenylglycine). The binding of the modified glutathione inhibitor, gamma-glutamyl-(S-benzyl)cysteinyl-D-phenylglycine, has been characterized with the phenyl group stacking against the benzyl moiety of the inhibitor and making interactions with the active-site residues Phe8 and Trp38. The structure provides an explanation as to why this compound inhibits the pi-class GST much better than the other GST classes. The structure of the enzyme in complex with glutathione has been determined to high resolution (1.9 to 2.2 A) in three different crystal forms and at two different temperatures (100 and 288 K). In one crystal form, the direct hydrogen-bonding interaction between the hydroxyl group of Tyr7, a residue involved in catalysis, and the thiol group of the substrate, glutathione, is broken and replaced by a water molecule that mediates the interaction. The hydrogen-bonding partner of the hydroxyl group of Tyr108, another residue implicated in the catalysis, is space-group dependent. A high-resolution (2.0 A) structure of the enzyme in complex with S-hexyl glutathione in a new crystal form is presented. The enzyme-inhibitor complexes show that the binding of ligand into the electrophilic binding site does not lead to any conformational changes of the protein.

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Related Citations: 

• Three-Dimensional Structure of Class Pi Glutathione S-Transferase from Human Placenta in Complex with S-Hexylglutathione at 2.8 A Resolution
  Reinemer, P.,Dirr, H.W.,Ladenstein, R.,Huber, R.,Lo Bello, M.,Federici, G.,Parker, M.W.
  (1992) J.Mol.Biol. 227: 214




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Organizational Affiliation: 

The Ian Potter Foundation Protein Crystallography Laboratory, St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
GLUTATHIONE S-TRANSFERASE P1-1	A, B	209	Homo sapiens	Mutation(s): 0  Gene Names: GSTP1 (FAEES3, GST3) EC: 2.5.1.18
Find proteins for P09211 (Homo sapiens) Go to Gene View: GSTP1 Go to UniProtKB:  P09211

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SO4	A	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
MES	A, B	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N
GTX	A, B	S-HEXYLGLUTATHIONE C16 H30 N3 O6 S HXJDWCWJDCOHDG-RYUDHWBXSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.97 Å
• R-Value Free: 0.232 
• R-Value Work: 0.194 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 77.774	α = 90.00
b = 89.914	β = 97.73
c = 68.751	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	refinement
X-PLOR	model building
SCALEPACK	data scaling
X-PLOR	phasing
DENZO	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-08-14 
• Released Date: 1998-09-16 
• Deposition Author(s): Oakley, A., Parker, M.

Revision History 

• Version 1.0: 1998-09-16
  Type: Initial release
• Version 1.1: 2008-03-03
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance