5WEK

GluA2 bound to antagonist ZK and GSG1L in digitonin, state 1


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Channel opening and gating mechanism in AMPA-subtype glutamate receptors.

Twomey, E.C.Yelshanskaya, M.V.Grassucci, R.A.Frank, J.Sobolevsky, A.I.

(2017) Nature 549: 60-65

  • DOI: 10.1038/nature23479
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid)-subtype ionotropic glutamate receptors mediate fast excitatory neurotransmission throughout the central nervous system. Gated by the neurotransmitter glutamate, AMPA receptors are critical ...

    AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid)-subtype ionotropic glutamate receptors mediate fast excitatory neurotransmission throughout the central nervous system. Gated by the neurotransmitter glutamate, AMPA receptors are critical for synaptic strength, and dysregulation of AMPA receptor-mediated signalling is linked to numerous neurological diseases. Here we use cryo-electron microscopy to solve the structures of AMPA receptor-auxiliary subunit complexes in the apo, antagonist- and agonist-bound states and determine the iris-like mechanism of ion channel opening. The ion channel selectivity filter is formed by the extended portions of the re-entrant M2 loops, while the helical portions of M2 contribute to extensive hydrophobic interfaces between AMPA receptor subunits in the ion channel. We show how the permeation pathway changes upon channel opening and identify conformational changes throughout the entire AMPA receptor that accompany activation and desensitization. Our findings provide a framework for understanding gating across the family of ionotropic glutamate receptors and the role of AMPA receptors in excitatory neurotransmission.


    Organizational Affiliation

    Department of Biological Sciences, Columbia University, 650 West 168th Street, New York, New York 10032, USA.,Integrated Program in Cellular, Molecular, and Biomedical Studies, Columbia University, 650 West 168th Street, New York, New York 10032, USA.,Howard Hughes Medical Institute, 650 West 168th Street, New York, New York 10032, USA.,Department of Biochemistry and Molecular Biophysics, Columbia University, 650 West 168th Street, New York, New York 10032, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chimera of Glutamate receptor 2,Germ cell-specific gene 1-like protein
A, B, C, D
1057Mus musculusRattus norvegicus
This entity is chimeric
Mutation(s): 6 
Gene Names: Gsg1l, Gria2 (Glur2)
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Other Ion Channels
Protein: 
GluA2 Glutamate receptor (AMPA-subtype)
Find proteins for D3Z7H4 (Mus musculus)
Go to UniProtKB:  D3Z7H4
Find proteins for P19491 (Rattus norvegicus)
Go to UniProtKB:  P19491
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZK1
Query on ZK1

Download SDF File 
Download CCD File 
A, B, C, D
{[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid
[[3,4-Dihydro-7-(4-morpholinyl)-2,3-dioxo-6-(trifluorom ethyl)-1(2H)-quinoxalinyl]methyl]phosphonic acid
C14 H15 F3 N3 O6 P
WZMQMKNCWDCCMT-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesNS093838
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesNS083660
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesCA206573
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM029169
Howard Hughes Medical Institute (HHMI)United States--

Revision History 

  • Version 1.0: 2017-08-02
    Type: Initial release
  • Version 1.1: 2017-09-13
    Type: Author supporting evidence, Database references
  • Version 1.2: 2018-07-18
    Type: Data collection, Experimental preparation
  • Version 1.3: 2019-11-20
    Type: Author supporting evidence