4U1X

Full length GluA2-kainate-(R,R)-2b complex crystal form B

• PDB DOI: https://doi.org/10.2210/pdb4U1X/pdb

• Classification: Transport protein, Membrane protein
• Organism(s): Rattus norvegicus
• Expression System: Homo sapiens
• Mutation(s): Yes 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2014-07-16 Released: 2014-08-20 
• Deposition Author(s): Chen, L., Gouaux, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 0.289 
• R-Value Work: 0.242 
• R-Value Observed: 0.245 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 373.19 kDa 
• Atom Count: 23,451 
• Modelled Residue Count: 2,980 
• Deposited Residue Count: 3,296 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glutamate receptor 2	A, B, C, D	824	Rattus norvegicus	Mutation(s): 14  Gene Names: Gria2, Glur2 Membrane Entity: Yes
UniProt
Find proteins for P19491 (Rattus norvegicus) Explore P19491  Go to UniProtKB:  P19491

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FWF	I [auth B], O [auth D]	N,N'-[biphenyl-4,4'-diyldi(2R)propane-2,1-diyl]dipropane-2-sulfonamide C24 H36 N2 O4 S2 HGLQSTHVRKGLQP-PMACEKPBSA-N
NAG	F [auth A], H [auth B], K [auth C], M [auth D]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
KAI	E [auth A], G [auth B], J [auth C], L [auth D]	3-(CARBOXYMETHYL)-4-ISOPROPENYLPROLINE C10 H15 N O4 VLSMHEGGTFMBBZ-OOZYFLPDSA-N
MES	N [auth D]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
KAI	BindingDB:  4U1X	Ki: min: 3690, max: 1.22e+4 (nM) from 4 assay(s)
		EC50: min: 1.06e+4, max: 3.80e+5 (nM) from 2 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 0.289 
• R-Value Work: 0.242 
• R-Value Observed: 0.245 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 96.52	α = 90
b = 160.73	β = 90
c = 338.88	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-08-20 
Deposition Author(s): Chen, L., Gouaux, E.

Revision History  

• Version 1.0: 2014-08-20
  Type: Initial release
  
• Version 1.1: 2014-10-01
  Changes: Database references
• Version 1.2: 2017-11-22
  Changes: Derived calculations, Other, Refinement description, Source and taxonomy, Structure summary
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Refinement description, Structure summary
• Version 1.4: 2023-12-27
  Changes: Data collection, Database references, Structure summary