Crystal Structure Analysis of a 6-Amino Quinazolinedione Sulfonamide bound to human GluR2

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.185 

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This is version 1.3 of the entry. See complete history


6-Amino quinazolinedione sulfonamides as orally active competitive AMPA receptor antagonists.

Orain, D.Ofner, S.Koller, M.Carcache, D.A.Froestl, W.Allgeier, H.Rasetti, V.Nozulak, J.Mattes, H.Soldermann, N.Floersheim, P.Desrayaud, S.Kallen, J.Lingenhoehl, K.Urwyler, S.

(2012) Bioorg Med Chem Lett 22: 996-999

  • DOI: https://doi.org/10.1016/j.bmcl.2011.12.009
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A new set of quinazolinedione sulfonamide derivatives as competitive AMPA receptor antagonist with improved properties compared to 1 is disclosed. By modulating physico-chemical properties, compound 29 was identified with a low ED(50) of 5.5mg/kg in an animal model of anticonvulsant activity after oral dosage.

  • Organizational Affiliation

    Novartis Institute for Biomedical Research, Global Discovery Chemistry, Basel CH-4002, Switzerland. david.orain@novartis.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glutamate receptor 2263Homo sapiensMutation(s): 0 
Gene Names: GRIA2GLUR2
UniProt & NIH Common Fund Data Resources
Find proteins for P42262 (Homo sapiens)
Explore P42262 
Go to UniProtKB:  P42262
PHAROS:  P42262
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP42262
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 08W

Download Ideal Coordinates CCD File 
B [auth A]N-methyl-1-{3-[(methylsulfonyl)amino]-2,4-dioxo-7-(trifluoromethyl)-1,2,3,4-tetrahydroquinazolin-6-yl}-1H-imidazole-4-carboxamide
C15 H13 F3 N6 O5 S
Binding Affinity Annotations 
IDSourceBinding Affinity
08W Binding MOAD:  3UA8 IC50: 14 (nM) from 1 assay(s)
PDBBind:  3UA8 IC50: 14 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.185 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.181α = 90
b = 104.548β = 90
c = 49.441γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
RemDAqdata collection

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2012-01-11 
  • Deposition Author(s): Kallen, J.

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-11
    Type: Initial release
  • Version 1.1: 2012-01-18
    Changes: Database references
  • Version 1.2: 2017-07-26
    Changes: Refinement description, Source and taxonomy
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description