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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-9388 | |||||||||
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| Title | structure of a complex | |||||||||
Map data | Structure of a complex | |||||||||
Sample |
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Keywords | AMPA receptor / ligand gated ion channel / neurotransmitter / synapse / MEMBRANE PROTEIN / MEMBRANE PROTEIN-Immune System complex | |||||||||
| Function / homology | Function and homology informationPresynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / postsynaptic neurotransmitter receptor diffusion trapping / channel regulator activity / LGI-ADAM interactions / Trafficking of AMPA receptors / regulation of AMPA receptor activity / membrane hyperpolarization ...Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / postsynaptic neurotransmitter receptor diffusion trapping / channel regulator activity / LGI-ADAM interactions / Trafficking of AMPA receptors / regulation of AMPA receptor activity / membrane hyperpolarization / nervous system process / Synaptic adhesion-like molecules / protein targeting to membrane / voltage-gated calcium channel complex / spine synapse / dendritic spine neck / dendritic spine cytoplasm / cellular response to amine stimulus / dendritic spine head / protein heterotetramerization / neurotransmitter receptor localization to postsynaptic specialization membrane / perisynaptic space / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity / neuromuscular junction development / parallel fiber to Purkinje cell synapse / AMPA glutamate receptor activity / response to lithium ion / Trafficking of GluR2-containing AMPA receptors / transmission of nerve impulse / AMPA glutamate receptor clustering / kainate selective glutamate receptor activity / cellular response to glycine / AMPA glutamate receptor complex / immunoglobulin binding / asymmetric synapse / extracellularly glutamate-gated ion channel activity / regulation of receptor recycling / ionotropic glutamate receptor complex / membrane depolarization / conditioned place preference / glutamate receptor binding / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission / positive regulation of synaptic transmission, glutamatergic / regulation of synaptic transmission, glutamatergic / regulation of postsynaptic membrane neurotransmitter receptor levels / synaptic cleft / response to fungicide / voltage-gated calcium channel activity / glutamate-gated receptor activity / cytoskeletal protein binding / extracellular ligand-gated monoatomic ion channel activity / regulation of long-term synaptic depression / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / somatodendritic compartment / dendrite membrane / excitatory synapse / ionotropic glutamate receptor binding / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor signaling pathway / dendrite cytoplasm / synaptic membrane / positive regulation of excitatory postsynaptic potential / hippocampal mossy fiber to CA3 synapse / dendritic shaft / SNARE binding / PDZ domain binding / calcium channel regulator activity / synaptic transmission, glutamatergic / regulation of membrane potential / protein tetramerization / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / establishment of protein localization / response to calcium ion / cerebral cortex development / postsynaptic density membrane / modulation of chemical synaptic transmission / receptor internalization / Schaffer collateral - CA1 synapse / terminal bouton / synaptic vesicle / long-term synaptic potentiation / synaptic vesicle membrane / signaling receptor activity / amyloid-beta binding / presynapse / growth cone / presynaptic membrane / scaffold protein binding / dendritic spine / chemical synaptic transmission / protein homotetramerization / perikaryon / postsynaptic membrane / neuron projection / postsynaptic density / axon Similarity search - Function | |||||||||
| Biological species | ![]() ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 6.5 Å | |||||||||
Authors | Gouaux E / Zhao Y | |||||||||
Citation | Journal: Science / Year: 2019Title: 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
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_9388.map.gz | 7.5 MB | EMDB map data format | |
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| Header (meta data) | emd-9388-v30.xml emd-9388.xml | 30.8 KB 30.8 KB | Display Display | EMDB header |
| Images | emd_9388.png | 126.5 KB | ||
| Filedesc metadata | emd-9388.cif.gz | 7.9 KB | ||
| Others | emd_9388_additional_1.map.gz emd_9388_additional_2.map.gz emd_9388_additional_3.map.gz | 8.4 MB 8 MB 7.4 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-9388 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-9388 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6njmMC ![]() 0426C ![]() 0427C ![]() 0428C ![]() 0429C ![]() 0430C ![]() 0431C ![]() 0432C ![]() 9387C ![]() 9389C ![]() 6njlC ![]() 6njnC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_9388.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | Structure of a complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.72 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: Structure of a complex
| File | emd_9388_additional_1.map | ||||||||||||
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| Annotation | Structure of a complex | ||||||||||||
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| Density Histograms |
-Additional map: Structure of a complex
| File | emd_9388_additional_2.map | ||||||||||||
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| Annotation | Structure of a complex | ||||||||||||
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| Density Histograms |
-Additional map: Structure of a complex
| File | emd_9388_additional_3.map | ||||||||||||
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| Annotation | Structure of a complex | ||||||||||||
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Sample components
+Entire : Native A3A2A3A2 complex bound with MPQX
+Supramolecule #1: Native A3A2A3A2 complex bound with MPQX
+Supramolecule #2: LBD-TMD layers of native A3A2A3A2 nAMPAR complex
+Supramolecule #3: ATD-LBD layers of native A3A2A3A2 nAMPAR complex
+Macromolecule #1: Glutamate receptor 3
+Macromolecule #2: Glutamate receptor 2
+Macromolecule #3: A'-C' auxiliary proteins
+Macromolecule #4: Voltage-dependent calcium channel gamma-2 subunit
+Macromolecule #5: 5B2 Fab Light Chain
+Macromolecule #6: 5B2 Fab Heavy Chain
+Macromolecule #7: 15F1 Fab light chain
+Macromolecule #8: 15F1 Fab heavy chain
+Macromolecule #11: {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquino...
+Macromolecule #12: 2-acetamido-2-deoxy-beta-D-glucopyranose
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 4 mg/mL | ||||||||||||
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| Buffer | pH: 8 Component:
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| Grid | Details: unspecified | ||||||||||||
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 295 K |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 54.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
| Refinement | Space: REAL / Protocol: RIGID BODY FIT |
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| Output model | ![]() PDB-6njm: |
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