3JPY

Crystal structure of the zinc-bound amino terminal domain of the NMDA receptor subunit NR2B


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

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This is version 1.4 of the entry. See complete history


Literature

Structure of the zinc-bound amino-terminal domain of the NMDA receptor NR2B subunit.

Karakas, E.Simorowski, N.Furukawa, H.

(2009) EMBO J 28: 3910-3920

  • DOI: https://doi.org/10.1038/emboj.2009.338
  • Primary Citation of Related Structures:  
    3JPW, 3JPY

  • PubMed Abstract: 

    N-methyl-D-aspartate (NMDA) receptors belong to the family of ionotropic glutamate receptors (iGluRs) that mediate the majority of fast excitatory synaptic transmission in the mammalian brain. One of the hallmarks for the function of NMDA receptors is that their ion channel activity is allosterically regulated by binding of modulator compounds to the extracellular amino-terminal domain (ATD) distinct from the L-glutamate-binding domain. The molecular basis for the ATD-mediated allosteric regulation has been enigmatic because of a complete lack of structural information on NMDA receptor ATDs. Here, we report the crystal structures of ATD from the NR2B NMDA receptor subunit in the zinc-free and zinc-bound states. The structures reveal the overall clamshell-like architecture distinct from the non-NMDA receptor ATDs and molecular determinants for the zinc-binding site, ion-binding sites, and the architecture of the putative phenylethanolamine-binding site.


  • Organizational Affiliation

    WM Keck Structural Biology Laboratory, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glutamate [NMDA] receptor subunit epsilon-2363Rattus norvegicusMutation(s): 1 
Gene Names: Grin2b
UniProt
Find proteins for Q00960 (Rattus norvegicus)
Explore Q00960 
Go to UniProtKB:  Q00960
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ00960
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL
Query on CL

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA
Query on NA

Download Ideal Coordinates CCD File 
I [auth A]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 143.368α = 90
b = 143.368β = 90
c = 88.467γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-12-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Data collection, Derived calculations, Structure summary
  • Version 1.3: 2021-10-13
    Changes: Database references, Structure summary
  • Version 1.4: 2023-09-06
    Changes: Data collection, Refinement description