4U5C

Crystal structure of GluA2, con-ikot-ikot snail toxin, partial agonist FW and postitive modulator (R,R)-2b complex

• PDB DOI: https://doi.org/10.2210/pdb4U5C/pdb

• Classification: Transport protein/toxin
• Organism(s): Rattus norvegicus, Conus striatus
• Expression System: Homo sapiens, Escherichia coli
• Mutation(s): Yes 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2014-07-25 Released: 2014-08-13 
• Deposition Author(s): Chen, L., Gouaux, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.69 Å
• R-Value Free: 0.254 
• R-Value Work: 0.207 
• R-Value Observed: 0.210 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A4B2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 6-mer - A2B2C2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - B2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - B2 

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

Macromolecule Content

• Total Structure Weight: 387.76 kDa 
• Atom Count: 24,451 
• Modelled Residue Count: 3,161 
• Deposited Residue Count: 3,436 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glutamate receptor 2	A, B, C, D	814	Rattus norvegicus	Mutation(s): 23  Gene Names: Gria2, Glur2 Membrane Entity: Yes
UniProt
Find proteins for P19491 (Rattus norvegicus) Explore P19491  Go to UniProtKB:  P19491

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Con-ikot-ikot	E, F	90	Conus striatus	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for P0CB20 (Conus striatus) Explore P0CB20  Go to UniProtKB:  P0CB20

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FWF	K [auth B], P [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	G [auth A], I [auth B], L [auth C], N [auth D]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
FWD	H [auth A], J [auth B], M [auth C], O [auth D]	2-AMINO-3-(5-FLUORO-2,4-DIOXO-3,4-DIHYDRO-2H-PYRIMIDIN-1-YL)-PROPIONIC ACID C7 H8 F N3 O4 DBWPFHJYSTVBCZ-BYPYZUCNSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
FWD	BindingDB:  4U5C	Ki: min: 4, max: 25 (nM) from 2 assay(s)
		EC50: min: 460, max: 463 (nM) from 2 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.69 Å
• R-Value Free: 0.254 
• R-Value Work: 0.207 
• R-Value Observed: 0.210 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 163.07	α = 90
b = 364.78	β = 90
c = 109.75	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data scaling
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-08-13 
Deposition Author(s): Chen, L., Gouaux, E.

Revision History  

• Version 1.0: 2014-08-13
  Type: Initial release
  
• Version 1.1: 2014-08-27
  Changes: Database references
• Version 1.2: 2014-10-01
  Changes: Database references
• Version 1.3: 2017-11-22
  Changes: Database references, Derived calculations, Other, Refinement description, Source and taxonomy, Structure summary
• Version 1.4: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Refinement description, Structure summary
• Version 1.5: 2023-12-27
  Changes: Data collection, Database references, Structure summary