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
Mutation(s): No

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

Experimental Data Snapshot

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

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history.

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 Search on PubMed
DOI: 10.1006/jmbi.1997.1364
Primary Citation of Related Structures:
7GSS, 6GSS, 5GSS, 8GSS, 10GS, 9GSS

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.

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

Organizational Affiliation:

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

Macromolecules

Find similar proteins by:

(by identity cutoff) | Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GLUTATHIONE S-TRANSFERASE P1-1	A, B	209	Homo sapiens	Mutation(s): 0 Gene Names: GTP_HUMAN, GSTP1, FAEES3, GST3 EC: 2.5.1.18
UniProt & NIH Common Fund Data Resources
Find proteins for P09211 (Homo sapiens) Explore P09211 Go to UniProtKB: P09211
PHAROS: P09211 GTEx: ENSG00000084207
Protein Feature View Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
GTX Query on GTX Download Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain F [auth B] MOL2 format, chain D [auth A] MOL2 format, chain F [auth B]	D [auth A], F [auth B]	S-HEXYLGLUTATHIONE C₁₆ H₃₀ N₃ O₆ S HXJDWCWJDCOHDG-RYUDHWBXSA-O		Ligand Interaction
MES Query on MES Download Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain G [auth B] MOL2 format, chain E [auth A] MOL2 format, chain G [auth B]	E [auth A], G [auth B]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C₆ H₁₃ N O₄ S SXGZJKUKBWWHRA-UHFFFAOYSA-N		Ligand Interaction
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A]	C [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Ligand Interaction