3UA8

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

• PDB DOI: https://doi.org/10.2210/pdb3UA8/pdb

• Classification: TRANSPORT PROTEIN/ANTAGONIST
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-10-21 Released: 2012-01-11 
• Deposition Author(s): Kallen, J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.215 
• R-Value Work: 0.184 
• R-Value Observed: 0.185 

Starting Model: experimental

Literature

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

• PubMed: 22197388 
• DOI: https://doi.org/10.1016/j.bmcl.2011.12.009
• Primary Citation of Related Structures:  
  3UA8


• 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. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 29.79 kDa 
• Atom Count: 2,290 
• Modelled Residue Count: 257 
• Deposited Residue Count: 263 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glutamate receptor 2	A	263	Homo sapiens	Mutation(s): 0  Gene Names: GRIA2, GLUR2
UniProt & NIH Common Fund Data Resources
Find proteins for P42262 (Homo sapiens) Explore P42262  Go to UniProtKB:  P42262
PHAROS:  P42262 GTEx:  ENSG00000120251

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
08W	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 HFRCANFHOYZAQE-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
08W	PDBBind:  3UA8	IC50: 14 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• 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 = 51.181	α = 90
b = 104.548	β = 90
c = 49.441	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
RemDAq	data collection

Structure Validation

Entry History 

Deposition Data

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

Revision History  

• 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