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Open data
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Basic information
| Entry | Database: PDB / ID: 6qkz | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Title | Full length GluA1/2-gamma8 complex | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Keywords | MEMBRANE PROTEIN / AMPAR / ion channel / GluA1 / GluA2 / tarp | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Function / homology | Function and homology informationPhase 0 - rapid depolarisation / Phase 2 - plateau phase / Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / COPII-mediated vesicle transport / positive regulation of membrane potential / cellular response to ammonium ion / response to sucrose / L-type voltage-gated calcium channel complex ...Phase 0 - rapid depolarisation / Phase 2 - plateau phase / Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / COPII-mediated vesicle transport / positive regulation of membrane potential / cellular response to ammonium ion / response to sucrose / L-type voltage-gated calcium channel complex / myosin V binding / LGI-ADAM interactions / neuron spine / Trafficking of AMPA receptors / postsynaptic neurotransmitter receptor diffusion trapping / proximal dendrite / regulation of AMPA receptor activity / protein phosphatase 2B binding / response to arsenic-containing substance / regulation of monoatomic ion transmembrane transport / channel regulator activity / cellular response to L-glutamate / ligand-gated calcium channel activity / cellular response to dsRNA / dendritic spine membrane / beta-2 adrenergic receptor binding / Synaptic adhesion-like molecules / long-term synaptic depression / cellular response to peptide hormone stimulus / spine synapse / dendritic spine neck / dendritic spine cytoplasm / dendritic spine head / cellular response to amine stimulus / peptide hormone receptor binding / response to psychosocial stress / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity / response to morphine / perisynaptic space / spinal cord development / neuronal cell body membrane / protein kinase A binding / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / AMPA glutamate receptor clustering / transmission of nerve impulse / kainate selective glutamate receptor activity / immunoglobulin binding / adenylate cyclase binding / behavioral response to pain / AMPA glutamate receptor complex / regulation of receptor recycling / response to electrical stimulus / extracellularly glutamate-gated ion channel activity / cellular response to glycine / ionotropic glutamate receptor complex / asymmetric synapse / Unblocking of NMDA receptors, glutamate binding and activation / G-protein alpha-subunit binding / conditioned place preference / glutamate receptor binding / positive regulation of synaptic transmission / regulation of postsynaptic membrane neurotransmitter receptor levels / voltage-gated calcium channel activity / long-term memory / postsynaptic density, intracellular component / regulation of synaptic transmission, glutamatergic / response to fungicide / neuronal action potential / extracellular ligand-gated monoatomic ion channel activity / cytoskeletal protein binding / glutamate-gated receptor activity / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / positive regulation of synaptic transmission, glutamatergic / somatodendritic compartment / glutamate-gated calcium ion channel activity / synapse assembly / presynaptic active zone membrane / excitatory synapse / ionotropic glutamate receptor signaling pathway / ionotropic glutamate receptor binding / dendrite membrane / dendrite cytoplasm / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / positive regulation of excitatory postsynaptic potential / dendritic shaft / SNARE binding / synaptic membrane / calcium channel regulator activity / PDZ domain binding / response to cocaine / neuromuscular junction / establishment of protein localization / protein tetramerization / cellular response to amino acid stimulus / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic Similarity search - Function | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Biological species | ![]() | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6.3 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||
Authors | Herguedas, B. / Garcia-Nafria, J. / Greger, I.G. | |||||||||||||||||||||||||||||||||||||||||||||||||||
Citation | Journal: Science / Year: 2019Title: Architecture of the heteromeric GluA1/2 AMPA receptor in complex with the auxiliary subunit TARP γ8. Authors: Beatriz Herguedas / Jake F Watson / Hinze Ho / Ondrej Cais / Javier García-Nafría / Ingo H Greger / ![]() 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 ...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. | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6qkz.cif.gz | 449.3 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb6qkz.ent.gz | 265.1 KB | Display | PDB format |
| PDBx/mmJSON format | 6qkz.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/qk/6qkz ftp://data.pdbj.org/pub/pdb/validation_reports/qk/6qkz | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 4575MC ![]() 4572C ![]() 6qkcC C: citing same article ( M: map data used to model this data |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Protein , 3 types, 6 molecules ACBDIJ
| #1: Protein | Mass: 100739.602 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Homo sapiens (human) / References: UniProt: P19490#2: Protein | Mass: 93880.078 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Homo sapiens (human) / References: UniProt: P19491#3: Protein | Mass: 43592.008 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Homo sapiens (human) / References: UniProt: Q8VHW5 |
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-Sugars , 3 types, 10 molecules 
| #4: Polysaccharide | Source method: isolated from a genetically manipulated source #5: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #7: Sugar | |
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-Non-polymers , 1 types, 4 molecules 
| #6: Chemical | ChemComp-E2Q / |
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-Details
| Has protein modification | Y |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: GluA1/A2 bound to gamma-8 / Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT |
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| Molecular weight | Value: 447 kDa/nm / Experimental value: NO |
| Source (natural) | Organism: ![]() |
| Source (recombinant) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 8 Details: 25 mM TRIS, pH 8, 150 mM NaCl and 0.1 % digitonin (w/v) |
| Specimen | Conc.: 0.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K Details: 3uL on grid, 60 sec incubation and 4sec blotting time |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: -900 nm / Nominal defocus min: -200 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 100 K / Temperature (min): 100 K |
| Image recording | Average exposure time: 14 sec. / Electron dose: 32 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 3 / Num. of real images: 5005 |
| EM imaging optics | Energyfilter slit width: 20 eV / Phase plate: VOLTA PHASE PLATE |
| Image scans | Width: 3838 / Height: 3710 / Movie frames/image: 35 |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C2 (2 fold cyclic) | ||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 6.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 183881 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||||||||||||||||
| Atomic model building |
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Movie
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Homo sapiens (human)


