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Open data
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Basic information
Entry | Database: PDB / ID: 6njl | |||||||||
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Title | Architecture and subunit arrangement of native AMPA receptors | |||||||||
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![]() | MEMBRANE PROTEIN/IMMUNE SYSTEM / AMPA receptor / ligand gated ion channel / neurotransmitter / synapse / MEMBRANE PROTEIN / MEMBRANE PROTEIN-IMMUNE SYSTEM complex | |||||||||
Function / homology | ![]() Presynaptic depolarization and calcium channel opening / Cargo concentration in the ER / cellular response to amine stimulus / axonal spine / COPII-mediated vesicle transport / positive regulation of membrane potential / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cellular response to ammonium ion / cerebellar mossy fiber ...Presynaptic depolarization and calcium channel opening / Cargo concentration in the ER / cellular response to amine stimulus / axonal spine / COPII-mediated vesicle transport / positive regulation of membrane potential / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cellular response to ammonium ion / cerebellar mossy fiber / neurotransmitter receptor transport, postsynaptic endosome to lysosome / LGI-ADAM interactions / myosin V binding / neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration / Trafficking of AMPA receptors / neuron spine / regulation of AMPA receptor activity / neurotransmitter receptor internalization / response to arsenic-containing substance / membrane hyperpolarization / cellular response to dsRNA / postsynaptic neurotransmitter receptor diffusion trapping / nervous system process / dendritic spine membrane / Synaptic adhesion-like molecules / protein targeting to membrane / long-term synaptic depression / beta-2 adrenergic receptor binding / cellular response to peptide hormone stimulus / voltage-gated calcium channel complex / neurotransmitter receptor localization to postsynaptic specialization membrane / protein kinase A binding / neuromuscular junction development / spinal cord development / spine synapse / dendritic spine neck / neuronal cell body membrane / dendritic spine head / Activation of AMPA receptors / perisynaptic space / transmission of nerve impulse / AMPA glutamate receptor activity / channel regulator activity / ligand-gated monoatomic cation channel activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / regulation of postsynaptic membrane neurotransmitter receptor levels / immunoglobulin binding / membrane depolarization / AMPA glutamate receptor complex / adenylate cyclase binding / kainate selective glutamate receptor activity / cellular response to organic cyclic compound / ionotropic glutamate receptor complex / excitatory synapse / extracellularly glutamate-gated ion channel activity / neuronal action potential / cellular response to glycine / calcium channel regulator activity / asymmetric synapse / G-protein alpha-subunit binding / regulation of receptor recycling / voltage-gated calcium channel activity / regulation of postsynaptic membrane potential / Unblocking of NMDA receptors, glutamate binding and activation / postsynaptic density, intracellular component / positive regulation of synaptic transmission / glutamate receptor binding / long-term memory / extracellular ligand-gated monoatomic ion channel activity / positive regulation of synaptic transmission, glutamatergic / response to electrical stimulus / glutamate-gated receptor activity / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / response to fungicide / regulation of synaptic transmission, glutamatergic / somatodendritic compartment / synapse assembly / cellular response to brain-derived neurotrophic factor stimulus / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / cytoskeletal protein binding / ionotropic glutamate receptor binding / dendrite cytoplasm / ionotropic glutamate receptor signaling pathway / hippocampal mossy fiber to CA3 synapse / cellular response to amino acid stimulus / regulation of membrane potential / SNARE binding / response to cocaine / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / dendritic shaft / synaptic membrane / synaptic transmission, glutamatergic / PDZ domain binding / long-term synaptic potentiation / protein tetramerization / postsynaptic density membrane / response to calcium ion Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6.7 Å | |||||||||
![]() | Gouaux, E. / Zhao, Y. | |||||||||
![]() | ![]() Title: Architecture and subunit arrangement of native AMPA receptors elucidated by cryo-EM. Authors: Yan Zhao / Shanshuang Chen / Adam C Swensen / Wei-Jun Qian / Eric Gouaux / ![]() Abstract: Glutamate-gated AMPA receptors mediate the fast component of excitatory signal transduction at chemical synapses throughout all regions of the mammalian brain. AMPA receptors are tetrameric ...Glutamate-gated AMPA receptors mediate the fast component of excitatory signal transduction at chemical synapses throughout all regions of the mammalian brain. AMPA receptors are tetrameric assemblies composed of four subunits, GluA1-GluA4. Despite decades of study, the subunit composition, subunit arrangement, and molecular structure of native AMPA receptors remain unknown. Here we elucidate the structures of 10 distinct native AMPA receptor complexes by single-particle cryo-electron microscopy (cryo-EM). We find that receptor subunits are arranged nonstochastically, with the GluA2 subunit preferentially occupying the B and D positions of the tetramer and with triheteromeric assemblies comprising a major population of native AMPA receptors. Cryo-EM maps define the structure for S2-M4 linkers between the ligand-binding and transmembrane domains, suggesting how neurotransmitter binding is coupled to ion channel gating. | |||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 851.3 KB | Display | ![]() |
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PDB format | ![]() | 668.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 9387MC ![]() 0426C ![]() 0427C ![]() 0428C ![]() 0429C ![]() 0430C ![]() 0431C ![]() 0432C ![]() 9388C ![]() 9389C ![]() 6njmC ![]() 6njnC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Components
-Glutamate receptor ... , 2 types, 4 molecules ACBD
#1: Protein | Mass: 101518.773 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #2: Protein | Mass: 98783.805 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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-Protein , 2 types, 4 molecules EGFH
#3: Protein | Mass: 13039.064 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #4: Protein | Mass: 35938.746 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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-Antibody , 3 types, 6 molecules ILJMKN
#5: Antibody | Mass: 27511.527 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #6: Antibody | Mass: 25111.660 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #7: Antibody | Mass: 27975.439 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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-Sugars , 2 types, 12 molecules ![](data/chem/img/NAG.gif)
#8: 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 #10: Sugar | ChemComp-NAG / |
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-Non-polymers , 1 types, 4 molecules ![](data/chem/img/ZK1.gif)
#9: Chemical | ChemComp-ZK1 / {[ |
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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: Native A1A2A1A2 complex bound with MPQX / Type: COMPLEX / Entity ID: #1-#7 / Source: NATURAL | ||||||||||||||||||||
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Source (natural) | Organism: ![]() ![]() | ||||||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||
Specimen support | Details: unspecified | ||||||||||||||||||||
Vitrification | Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 54 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||
3D reconstruction | Resolution: 6.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 130000 / Symmetry type: POINT | ||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||
Refinement | Highest resolution: 6.7 Å |