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 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 

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Ligand Structure Quality Assessment 


This is version 1.1 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: 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 ...

    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
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glutathione S-transferase omega-1A, B, C, D, E, F244Homo sapiensMutation(s): 0 
Gene Names: GSTO1, GSTTLP28
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
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 
  • 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

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Ligand Structure Quality Assessment  


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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