6PNN

Human GSTO1-1 complexed with 2-chloro-N-(4-chloro-3-(N-(2-methoxyethyl)-N-methylsulfamoyl)phenyl)acetamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Development of Benzenesulfonamide Derivatives as Potent Glutathione Transferase Omega-1 Inhibitors.

Xie, Y.Tummala, P.Oakley, A.J.Deora, G.S.Nakano, Y.Rooke, M.Cuellar, M.E.Strasser, J.M.Dahlin, J.L.Walters, M.A.Casarotto, M.G.Board, P.G.Baell, J.B.

(2020) J Med Chem 63: 2894-2914

  • DOI: 10.1021/acs.jmedchem.9b01391
  • Primary Citation of Related Structures:  
    6PNM, 6PNO, 6PNN

  • PubMed Abstract: 
  • Glutathione transferase omega-1 (GSTO1-1) is an enzyme whose function supports the activation of interleukin (IL)-1β and IL-18 that are implicated in a variety of inflammatory disease states for which small-molecule inhibitors are sought. The potent reactivity of the active-site cysteine has resulted in reported inhibitors that act by covalent labeling ...

    Glutathione transferase omega-1 (GSTO1-1) is an enzyme whose function supports the activation of interleukin (IL)-1β and IL-18 that are implicated in a variety of inflammatory disease states for which small-molecule inhibitors are sought. The potent reactivity of the active-site cysteine has resulted in reported inhibitors that act by covalent labeling. In this study, structure-activity relationship (SAR) elaboration of the reported GSTO1-1 inhibitor C1-27 was undertaken. Compounds were evaluated for inhibitory activity toward purified recombinant GSTO1-1 and for indicators of target engagement in cell-based assays. As covalent inhibitors, the k inact / K I values of selected compounds were determined, as well as in vivo pharmacokinetics analysis. Cocrystal structures of key novel compounds in complex with GSTO1-1 were also solved. This study represents the first application of a biochemical assay for GSTO1-1 to determine k inact / K I values for tested inhibitors and the most extensive set of cell-based data for a GSTO1-1 inhibitor SAR series reported to date. Our research culminated in the discovery of 25 , which we propose as the preferred biochemical tool to interrogate cellular responses to GSTO1-1 inhibition.


    Organizational Affiliation

    ARC Centre for Fragment-Based Design, Monash University, Parkville, VIC 3052, Australia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glutathione S-transferase omega-1A240Homo 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
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OR7 (Subject of Investigation/LOI)
Query on OR7

Download Ideal Coordinates CCD File 
E [auth A]2-chloro-N-{4-chloro-3-[(2-methoxyethyl)(methyl)sulfamoyl]phenyl}acetamide
C12 H16 Cl2 N2 O4 S
ADUIOJAMEFYIGZ-UHFFFAOYSA-N
 Ligand Interaction
TLA
Query on TLA

Download Ideal Coordinates CCD File 
D [auth A]L(+)-TARTARIC ACID
C4 H6 O6
FEWJPZIEWOKRBE-JCYAYHJZSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
B [auth A], C [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.16α = 90
b = 57.16β = 90
c = 139.66γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2019-07-02 
  • Released Date: 2019-07-24 
  • Deposition Author(s): Oakley, A.J.

Funding OrganizationLocationGrant Number
National Health and Medical Research Council (NHMRC, Australia)AustraliaAPP1124673
National Health and Medical Research Council (NHMRC, Australia)AustraliaAPP1156455

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-24
    Type: Initial release
  • Version 1.1: 2020-01-08
    Changes: Author supporting evidence
  • Version 1.2: 2020-03-11
    Changes: Database references
  • Version 1.3: 2020-04-08
    Changes: Database references