3BKI image
Deposition Date 2007-12-06
Release Date 2008-09-16
Last Version Date 2024-10-30
Entry Detail
PDB ID:
3BKI
Keywords:
TRANSPORT PROTEIN
Title:
Crystal Structure of the GluR2 ligand binding core (S1S2J) in complex with FQX at 1.87 Angstroms
Biological Source:
Source Organism:
Rattus norvegicus (Taxon ID: 10116)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.87 Å
R-Value Free:
0.22
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 21 21 21
3BKI validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Glutamate receptor 2
Gene (Uniprot):Gria2
Chain IDs:A (auth: P), B, C, D
Chain Length:263
Number of Molecules:4
Biological Source:Rattus norvegicus
UniProt ID:P19491 Pfam ID:PF10613, PF00060
Ligand Molecules
FQX
Primary Citation
6-Azido-7-nitro-1,4-dihydroquinoxaline-2,3-dione (ANQX) forms an irreversible bond to the active site of the GluR2 AMPA receptor.
J.Med.Chem. 51 5856 5860 (2008)
PMID: 18754610 DOI: 10.1021/jm701517b

Abstact

AMPA receptors mediate fast excitatory synaptic transmission and are essential for synaptic plasticity. ANQX, a photoreactive AMPA receptor antagonist, is an important biological probe used to irreversibly inactivate AMPA receptors. Here, using X-ray crystallography and mass spectroscopy, we report that ANQX forms two major products in the presence of the GluR2 AMPAR ligand-binding core (S1S2J). Upon photostimulation, ANQX reacts intramolecularly to form FQX or intermolecularly to form a covalent adduct with Glu705.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
3BKG