6MHB

Glutathione S-Transferase Omega 1 bound to covalent inhibitor 18


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 
    0.247 (Depositor), 0.250 (DCC) 
  • R-Value Work: 
    0.209 (Depositor), 0.220 (DCC) 
  • R-Value Observed: 
    0.211 (Depositor) 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted JR7Click on this verticalbar to view details

This is version 1.3 of the entry. See complete history


Literature

Structure-Based Design of N-(5-Phenylthiazol-2-yl)acrylamides as Novel and Potent Glutathione S-Transferase Omega 1 Inhibitors.

Dai, W.Samanta, S.Xue, D.Petrunak, E.M.Stuckey, J.A.Han, Y.Sun, D.Wu, Y.Neamati, N.

(2019) J Med Chem 62: 3068-3087

  • DOI: https://doi.org/10.1021/acs.jmedchem.8b01960
  • Primary Citation of Related Structures:  
    6MHB, 6MHC, 6MHD

  • PubMed Abstract: 

    Using reported glutathione S-transferase omega 1 (GSTO1-1) cocrystal structures, we designed and synthesized acrylamide-containing compounds that covalently bind to Cys32 on the catalytic site. Starting from a thiazole derivative 10 (GSTO1-1 IC 50 = 0.6 μM), compound 18 was synthesized and cocrystallized with GSTO1. Modification on the amide moiety of hit compound 10 significantly increased the GSTO1-1 inhibitory potency. We solved the cocrystal structures of new derivatives, 37 and 44, bearing an amide side chain bound to GSTO1. These new structures showed a reorientation of the phenyl thiazole core of inhibitors, 37 and 44, when compared to 18. Guided by the cocrystal structure of GSTO1:44, analogue 49 was designed, resulting in the most potent GSTO1-1 inhibitor (IC 50 = 0.22 ± 0.02 nM) known to date. We believe that our data will form the basis for future studies of developing GSTO1-1 as a new drug target for cancer therapy.


  • Organizational Affiliation

    Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education, West China School of Pharmacy , Sichuan University , No. 17 People's South Road , Chengdu 610041 , P. R. China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glutathione S-transferase omega-1
A, B, C, D, E
244Homo sapiensMutation(s): 0 
Gene Names: GSTO1GSTTLP28
EC: 2.5.1.18 (PDB Primary Data), 1.8.5.1 (PDB Primary Data), 1.20.4.2 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P78417 (Homo sapiens)
Explore P78417 
Go to UniProtKB:  P78417
PHAROS:  P78417
GTEx:  ENSG00000148834 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP78417
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
JR7 (Subject of Investigation/LOI)
Query on JR7

Download Ideal Coordinates CCD File 
G [auth A]
I [auth B]
J [auth C]
L [auth D]
N [auth E]
N-[4-(4-chlorophenyl)-1,3-thiazol-2-yl]propanamide
C12 H11 Cl N2 O S
NRCYQWNSXCXBPN-UHFFFAOYSA-N
MES
Query on MES

Download Ideal Coordinates CCD File 
H [auth A],
K [auth C],
M [auth D],
P [auth F]
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free:  0.247 (Depositor), 0.250 (DCC) 
  • R-Value Work:  0.209 (Depositor), 0.220 (DCC) 
  • R-Value Observed: 0.211 (Depositor) 
Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.386α = 106.58
b = 68.825β = 100.35
c = 93.645γ = 96.16
Software Package:
Software NamePurpose
BUSTERrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted JR7Click on this verticalbar to view details

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-02-20
    Type: Initial release
  • Version 1.1: 2019-04-10
    Changes: Data collection, Database references
  • Version 1.2: 2023-10-11
    Changes: Data collection, Database references, Refinement description
  • Version 1.3: 2024-11-20
    Changes: Structure summary