5JCU

Crystal Structure of hGSTA1-1 with Glutathione Adduct of Phenethyl Isothiocyanate and Cystein Adduct of Phenethyl Isothiocyanate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.177 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Irreversible Inhibition of Glutathione S-Transferase by Phenethyl Isothiocyanate (PEITC), a Dietary Cancer Chemopreventive Phytochemical.

Dyba, M.A.Holland, R.J.Liang, Y.H.Singh, S.V.Ji, X.Kumari, V.

(2016) Plos One 11: e0163821-e0163821

  • DOI: 10.1371/journal.pone.0163821
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Dietary isothiocyanates abundant as glucosinolate precursors in many edible cruciferous vegetables are effective for prevention of cancer in chemically-induced and transgenic rodent models. Some of these agents, including phenethyl isothiocyanate (PE ...

    Dietary isothiocyanates abundant as glucosinolate precursors in many edible cruciferous vegetables are effective for prevention of cancer in chemically-induced and transgenic rodent models. Some of these agents, including phenethyl isothiocyanate (PEITC), have already advanced to clinical investigations. The primary route of isothiocyanate metabolism is its conjugation with glutathione (GSH), a reaction catalyzed by glutathione S-transferase (GST). The pi class GST of subunit type 1 (hGSTP1) is much more effective than the alpha class GST of subunit type 1 (hGSTA1) in catalyzing the conjugation. Here, we report the crystal structures of hGSTP1 and hGSTA1 each in complex with the GSH adduct of PEITC. We find that PEITC also covalently modifies the cysteine side chains of GST, which irreversibly inhibits enzymatic activity.


    Related Citations: 
    • Structure determination and refinement of human alpha class glutathione transferase A1-1, and a comparison with the Mu and Pi class enzymes.
      Sinning, I.,Kleywegt, G.J.,Cowan, S.W.,Reinemer, P.,Dirr, H.W.,Huber, R.,Gilliland, G.L.,Armstrong, R.N.,Ji, X.,Board, P.G.
      (1993) J. Mol. Biol. 232: 192


    Organizational Affiliation

    Center for Cancer Research, National Cancer Institute, Frederick, Maryland, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glutathione S-transferase A1
A, B, C, D
221Homo sapiensMutation(s): 0 
Gene Names: GSTA1
EC: 2.5.1.18
Find proteins for P08263 (Homo sapiens)
Go to Gene View: GSTA1
Go to UniProtKB:  P08263
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GVX
Query on GVX

Download SDF File 
Download CCD File 
A, B, C, D
L-gamma-glutamyl-S-[(2-phenylethyl)carbamothioyl]-L-cysteinylglycine
C19 H26 N4 O6 S2
WSGBVCNCZSZCGE-KBPBESRZSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, C, D
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
6M6
Query on 6M6
A, B, C, D
L-PEPTIDE LINKINGC12 H16 N2 O2 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.177 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 100.335α = 90.00
b = 92.666β = 92.18
c = 104.051γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
PHENIXrefinement
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2016-04-15 
  • Released Date: 2016-10-12 
  • Deposition Author(s): Kumari, V., Ji, X.

Revision History 

  • Version 1.0: 2016-10-12
    Type: Initial release