5KBS

Cryo-EM structure of GluA2-0xSTZ at 8.7 Angstrom resolution


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.7 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Elucidation of AMPA receptor-stargazin complexes by cryo-electron microscopy.

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

(2016) Science 353: 83-86

  • DOI: 10.1126/science.aaf8411
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • AMPA-subtype ionotropic glutamate receptors (AMPARs) mediate fast excitatory neurotransmission and contribute to high cognitive processes such as learning and memory. In the brain, AMPAR trafficking, gating, and pharmacology is tightly controlled by ...

    AMPA-subtype ionotropic glutamate receptors (AMPARs) mediate fast excitatory neurotransmission and contribute to high cognitive processes such as learning and memory. In the brain, AMPAR trafficking, gating, and pharmacology is tightly controlled by transmembrane AMPAR regulatory proteins (TARPs). Here, we used cryo-electron microscopy to elucidate the structural basis of AMPAR regulation by one of these auxiliary proteins, TARP γ2, or stargazin (STZ). Our structures illuminate the variable interaction stoichiometry of the AMPAR-TARP complex, with one or two TARP molecules binding one tetrameric AMPAR. Analysis of the AMPAR-STZ binding interfaces suggests that electrostatic interactions between the extracellular domains of AMPAR and STZ play an important role in modulating AMPAR function through contact surfaces that are conserved across AMPARs and TARPs. We propose a model explaining how TARPs stabilize the activated state of AMPARs and how the interactions between AMPARs and their auxiliary proteins control fast excitatory synaptic transmission.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics, Columbia University, 650 West 168th Street, New York, NY 10032, USA. Integrated Program in Cellular, Molecular, and Biomedical Studies, Columbia University, 650 West 168th Street, New York, NY 10032, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glutamate receptor 2,Voltage-dependent calcium channel gamma-2 subunit
A, B, C, D
1034Rattus norvegicusMus musculus
This entity is chimeric
Mutation(s): 5 
Gene Names: Gria2 (Glur2), Cacng2 (Stg)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Other Ion Channels
Protein: 
GluA2 Glutamate receptor (AMPA-subtype)
Find proteins for P19491 (Rattus norvegicus)
Go to UniProtKB:  P19491
Find proteins for O88602 (Mus musculus)
Go to UniProtKB:  O88602
Small Molecules
Ligands 2 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
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.7 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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 General Medical SciencesUnited StatesT32 GM008224, T32 GM008281, R01 NS083660, R01 GM29169

Revision History 

  • Version 1.0: 2016-07-13
    Type: Initial release
  • Version 1.1: 2016-07-20
    Type: Other
  • Version 1.2: 2017-09-27
    Type: Author supporting evidence