6QKZ

Full length GluA1/2-gamma8 complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Architecture of the heteromeric GluA1/2 AMPA receptor in complex with the auxiliary subunit TARP gamma 8.

Herguedas, B.Watson, J.F.Ho, H.Cais, O.Garcia-Nafria, J.Greger, I.H.

(2019) Science 364

  • DOI: 10.1126/science.aav9011
  • Primary Citation of Related Structures:  
    6QKC, 6QKZ

  • PubMed Abstract: 
  • AMPA-type glutamate receptors (AMPARs) mediate excitatory neurotransmission and are central regulators of synaptic plasticity, a molecular mechanism underlying learning and memory. Although AMPARs act predominantly as heteromers, structural studies have focused on homomeric assemblies ...

    AMPA-type glutamate receptors (AMPARs) mediate excitatory neurotransmission and are central regulators of synaptic plasticity, a molecular mechanism underlying learning and memory. Although AMPARs act predominantly as heteromers, structural studies have focused on homomeric assemblies. Here, we present a cryo-electron microscopy structure of the heteromeric GluA1/2 receptor associated with two transmembrane AMPAR regulatory protein (TARP) γ8 auxiliary subunits, the principal AMPAR complex at hippocampal synapses. Within the receptor, the core subunits arrange to give the GluA2 subunit dominant control of gating. This structure reveals the geometry of the Q/R site that controls calcium flux, suggests association of TARP-stabilized lipids, and demonstrates that the extracellular loop of γ8 modulates gating by selectively interacting with the GluA2 ligand-binding domain. Collectively, this structure provides a blueprint for deciphering the signal transduction mechanisms of synaptic AMPARs.


    Organizational Affiliation

    Neurobiology Division, Medical Research Council (MRC) Laboratory of Molecular Biology, Cambridge, UK. ig@mrc-lmb.cam.ac.uk hergueda@mrc-lmb.cam.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GluA1A, C897Rattus norvegicusMutation(s): 0 
Gene Names: Gria1Glur1
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Other Ion Channels
Protein: 
Glutamate receptor (AMPA-subtype), GluA1/GluA2/GluA1/GluA2 tetramer in complex with TARP γ8
Find proteins for P19490 (Rattus norvegicus)
Explore P19490 
Go to UniProtKB:  P19490
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Glutamate receptor 2B, D839Rattus norvegicusMutation(s): 0 
Gene Names: Gria2Glur2
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Other Ion Channels
Protein: 
Glutamate receptor (AMPA-subtype), GluA1/GluA2/GluA1/GluA2 tetramer in complex with TARP γ8
Find proteins for P19491 (Rattus norvegicus)
Explore P19491 
Go to UniProtKB:  P19491
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Voltage-dependent calcium channel gamma-8 subunitE [auth I], F [auth J]423Rattus norvegicusMutation(s): 0 
Gene Names: Cacng8
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Other Ion Channels
Protein: 
Glutamate receptor (AMPA-subtype), GluA1/GluA2/GluA1/GluA2 tetramer in complex with TARP γ8
Find proteins for Q8VHW5 (Rattus norvegicus)
Explore Q8VHW5 
Go to UniProtKB:  Q8VHW5
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseG [auth E], K3 N-Glycosylation Oligosaccharides Interaction
Entity ID: 5
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseH [auth F], I [auth G], J [auth H], L, M, N2 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
E2Q
Query on E2Q

Download Ideal Coordinates CCD File 
O [auth A], Q [auth B], R [auth C], T [auth D]6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide
C12 H8 N4 O6 S
UQNAFPHGVPVTAL-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download Ideal Coordinates CCD File 
P [auth A], S [auth C]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-27
    Type: Initial release
  • Version 1.1: 2019-05-08
    Changes: Data collection, Database references
  • Version 1.2: 2019-11-06
    Changes: Data collection, Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary