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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 / LGI-ADAM interactions / Trafficking of AMPA receptors / postsynaptic neurotransmitter receptor diffusion trapping / regulation of AMPA receptor activity / channel regulator activity / ligand-gated calcium channel activity ...Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / LGI-ADAM interactions / Trafficking of AMPA receptors / postsynaptic neurotransmitter receptor diffusion trapping / regulation of AMPA receptor activity / channel regulator activity / ligand-gated calcium channel 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 / dendritic spine head / cellular response to amine stimulus / Activation of AMPA receptors / neurotransmitter receptor localization to postsynaptic specialization membrane / ligand-gated monoatomic cation channel activity / protein heterotetramerization / perisynaptic space / neuromuscular junction development / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / parallel fiber to Purkinje cell synapse / AMPA glutamate receptor clustering / transmission of nerve impulse / kainate selective glutamate receptor activity / immunoglobulin binding / AMPA glutamate receptor complex / regulation of receptor recycling / extracellularly glutamate-gated ion channel activity / cellular response to glycine / ionotropic glutamate receptor complex / asymmetric synapse / Unblocking of NMDA receptors, glutamate binding and activation / glutamate receptor binding / conditioned place preference / membrane depolarization / positive regulation of synaptic transmission / regulation of postsynaptic membrane neurotransmitter receptor levels / voltage-gated calcium channel activity / synaptic cleft / response to fungicide / regulation of synaptic transmission, glutamatergic / 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 / 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 / hippocampal mossy fiber to CA3 synapse / dendritic shaft / SNARE binding / synaptic membrane / calcium channel regulator activity / PDZ domain binding / establishment of protein localization / protein tetramerization / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / regulation of membrane potential / cerebral cortex development / receptor internalization / response to calcium ion / postsynaptic density membrane / modulation of chemical synaptic transmission / Schaffer collateral - CA1 synapse / terminal bouton / synaptic vesicle / long-term synaptic potentiation / amyloid-beta binding / synaptic vesicle membrane / growth cone / presynapse / signaling receptor activity / presynaptic membrane / scaffold protein binding / protein homotetramerization / dendritic spine / chemical synaptic transmission / perikaryon / postsynaptic membrane / neuron projection / postsynaptic density 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 |
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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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-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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