6FQG

GluA2(flop) G724C ligand binding core dimer bound to L-Glutamate (Form A) at 2.34 Angstrom resolution

• PDB DOI: https://doi.org/10.2210/pdb6FQG/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli K-12
• Mutation(s): No 


• Deposited: 2018-02-14 Released: 2019-03-13 
• Deposition Author(s): Coombs, I.D., Soto, D., Gold, M.G., Farrant, M.F., Cull-Candy, S.G.
• Funding Organization(s): Medical Research Council (United Kingdom), Wellcome Trust

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.34 Å
• R-Value Free: 0.231 
• R-Value Work: 0.179 
• R-Value Observed: 0.181 

Literature

X-ray structure of GluA2 flop G724C ligand binding core dimer bound to glutamate at 2.32 Angstroms resolution

Coombs, I.D., Soto, D., Gold, M.G., Farrant, M.F., Cull-Candy, S.G.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: cross-linking

Macromolecule Content

• Total Structure Weight: 58.94 kDa 
• Atom Count: 4,166 
• Modelled Residue Count: 517 
• Deposited Residue Count: 528 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glutamate receptor 2	A, B	264	Rattus norvegicus	Mutation(s): 0  Gene Names: Gria2, Glur2
UniProt
Find proteins for P19491 (Rattus norvegicus) Explore P19491  Go to UniProtKB:  P19491

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GLU	C [auth A], D [auth B]	GLUTAMIC ACID C5 H9 N O4 WHUUTDBJXJRKMK-VKHMYHEASA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
GGL	BindingDB:  6FQG	Ki: min: 62, max: 1.00e+4 (nM) from 13 assay(s)
		EC50: min: 1300, max: 1.90e+5 (nM) from 26 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.34 Å
• R-Value Free: 0.231 
• R-Value Work: 0.179 
• R-Value Observed: 0.181 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.465	α = 90
b = 87.655	β = 110.223
c = 68.28	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
xia2	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-03-13 
Deposition Author(s): Coombs, I.D., Soto, D., Gold, M.G., Farrant, M.F., Cull-Candy, S.G.

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Funding Organization	Location	Grant Number
Medical Research Council (United Kingdom)	United Kingdom	MR/J002976/1
Medical Research Council (United Kingdom)	United Kingdom	MR/J012998/1
Wellcome Trust	United Kingdom	086185/Z/08/Z

Revision History  

• Version 1.0: 2019-03-13
  Type: Initial release
  
• Version 2.0: 2023-03-15
  Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Source and taxonomy, Structure summary
• Version 2.1: 2024-02-07
  Changes: Data collection, Refinement description