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Yorodumi- EMDB-73862: The structure of TMD with 3 TARPs and 1 CNIH from all native AMPA... -
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Basic information
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| Title | The structure of TMD with 3 TARPs and 1 CNIH from all native AMPA receptor subtypes | |||||||||
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Keywords | Ionotropic glutamate receptor AMPA receptor / MEMBRANE PROTEIN | |||||||||
| Function / homology | Function and homology informationPhase 0 - rapid depolarisation / Phase 2 - plateau phase / Activation of AMPA receptors / Unblocking of NMDA receptors, glutamate binding and activation / Trafficking of GluR2-containing AMPA receptors / LGI-ADAM interactions / Trafficking of AMPA receptors / L-type voltage-gated calcium channel complex / regulation of AMPA receptor activity / perisynaptic space ...Phase 0 - rapid depolarisation / Phase 2 - plateau phase / Activation of AMPA receptors / Unblocking of NMDA receptors, glutamate binding and activation / Trafficking of GluR2-containing AMPA receptors / LGI-ADAM interactions / Trafficking of AMPA receptors / L-type voltage-gated calcium channel complex / regulation of AMPA receptor activity / perisynaptic space / ligand-gated monoatomic cation channel activity / AMPA glutamate receptor activity / kainate selective glutamate receptor activity / AMPA glutamate receptor complex / extracellularly glutamate-gated ion channel activity / regulation of postsynaptic membrane neurotransmitter receptor levels / glutamate-gated receptor activity / somatodendritic compartment / synaptic membrane / calcium channel regulator activity / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / postsynaptic density membrane / Schaffer collateral - CA1 synapse / calcium channel activity / synaptic vesicle / synaptic vesicle membrane / chemical synaptic transmission / postsynaptic membrane / neuron projection / postsynaptic density / dendrite / synapse / glutamatergic synapse / endoplasmic reticulum / membrane / plasma membrane Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.0 Å | |||||||||
Authors | Park J / Gouaux E | |||||||||
| Funding support | United States, 1 items
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Citation | Journal: Protein Sci / Year: 2026Title: Efficient and rapid isolation of native AMPA receptor complexes for cryo-EM. Authors: Jumi Park / Eric Gouaux / ![]() Abstract: Isolating native ion channels for structural characterization is routinely achieved by extraction from membrane fractions of tissue with prolonged mild detergent treatment. AMPA receptors (AMPARs), ...Isolating native ion channels for structural characterization is routinely achieved by extraction from membrane fractions of tissue with prolonged mild detergent treatment. AMPA receptors (AMPARs), glutamatergic receptors that mediate fast excitatory transmission and synaptic plasticity, are coassembled with diverse auxiliary subunits and transiently-interacting partners to finely regulate processes from trafficking to gating kinetics. Previous studies of the composition and architecture of native AMPARs (nAMPARs) isolated from membrane fractions of rodent brain tissue have revealed many different subunit compositions and non-stochastic assemblies of the auxiliary subunits. However, elucidating the molecular architectures of nAMPARs complexed with less populated or transiently bound proteins has proven challenging. Here, we employ strategies for the rapid solubilization and purification of nAMPARs to increase the likelihood of isolating the greatest range of nAMPARs complexes. By utilizing whole brain tissue and reducing solubilization and purification duration, we purify nAMPARs complexed with a wider variety of auxiliary subunits and binding partners in a sufficient quantity and purity for cryo-electron microscopy studies. We resolve previously unreported subunit compositions and conformations that include ones with a half-splayed ATD layer, as well as complexes with four distinct auxiliary subunit arrangements in the TMD layer. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_73862.map.gz | 256.2 MB | EMDB map data format | |
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| Header (meta data) | emd-73862-v30.xml emd-73862.xml | 22.2 KB 22.2 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_73862_fsc.xml | 16.9 KB | Display | FSC data file |
| Images | emd_73862.png | 126.2 KB | ||
| Filedesc metadata | emd-73862.cif.gz | 6.4 KB | ||
| Others | emd_73862_half_map_1.map.gz emd_73862_half_map_2.map.gz | 475.6 MB 475.6 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-73862 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-73862 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9z6vMC ![]() 9z6uC ![]() 9z6wC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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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_73862.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.839 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: #2
| File | emd_73862_half_map_1.map | ||||||||||||
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-Half map: #1
| File | emd_73862_half_map_2.map | ||||||||||||
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Sample components
-Entire : Native AMPA receptors with 3 TARPs and 1 CNIH
| Entire | Name: Native AMPA receptors with 3 TARPs and 1 CNIH |
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| Components |
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-Supramolecule #1: Native AMPA receptors with 3 TARPs and 1 CNIH
| Supramolecule | Name: Native AMPA receptors with 3 TARPs and 1 CNIH / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 |
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| Source (natural) | Organism: ![]() |
-Macromolecule #1: Mix of AMPAR subunit (GluA1, GluA2, GluA3 and GluA4)
| Macromolecule | Name: Mix of AMPAR subunit (GluA1, GluA2, GluA3 and GluA4) / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 29.723635 KDa |
| Sequence | String: KPGVFSFLDP LAYEIWMCIV FAYIGVSVVL FLVSRFS(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)N EFGIFNSLWF SLGA FMQQG CDISPRSLSG ...String: KPGVFSFLDP LAYEIWMCIV FAYIGVSVVL FLVSRFS(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)N EFGIFNSLWF SLGA FMQQG CDISPRSLSG RIVGGVWWFF TLIIISSYTA NLAAFLTVER MV(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)SALS LSNVAGVFYI LAGGLGLAMA VALIEFCYKS RA |
-Macromolecule #2: Glutamate receptor 2
| Macromolecule | Name: Glutamate receptor 2 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 29.83883 KDa |
| Sequence | String: KPGVFSFLDP LAYEIWMCIV FAYIGVSVVL FLVSRFS(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)N EFGIFNSLWF SLGA FMRQG CDISPRSLSG ...String: KPGVFSFLDP LAYEIWMCIV FAYIGVSVVL FLVSRFS(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)N EFGIFNSLWF SLGA FMRQG CDISPRSLSG RIVGGVWWFF TLIIISSYTA NLAAFLTVER MV(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)TSALS LSNVAGVFYI LVGGLGLAML VALIEFCYKS RA UniProtKB: Glutamate receptor 2, Glutamate receptor 2, Glutamate receptor 2 |
-Macromolecule #3: Mix of protein cornichon homolog 2 and 3
| Macromolecule | Name: Mix of protein cornichon homolog 2 and 3 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 17.901887 KDa |
| Sequence | String: AFTFAAFCYM LALVLCAALI FFAIWHIIAF DELRTDFKAP IDQANPAAAR ERLANIERIC ALLRKLVAPE YSIHALFCAM FLCAAEWAT LGLNAPLLFY HAWRYFHAPA DASEAAYDAA AAMNADALAY CQKEAWCKLA FYLLSFFYYL YAMAYTLVSA |
-Macromolecule #4: Mix of voltage-dependent calcium channel gamma subunits
| Macromolecule | Name: Mix of voltage-dependent calcium channel gamma subunits type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 21.045174 KDa |
| Sequence | String: VQALLTTAGA FAAFALMTIA AATDYWLYAR AAACATAAAA (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)AAAAKKAA AAATHSGLWR ACCLEGAAAG ACAAIAHFPE DADYAADAAE YALRAVRASS IFPILSA IL LAAGGACAAA ...String: VQALLTTAGA FAAFALMTIA AATDYWLYAR AAACATAAAA (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)AAAAKKAA AAATHSGLWR ACCLEGAAAG ACAAIAHFPE DADYAADAAE YALRAVRASS IFPILSA IL LAAGGACAAA SAAYKAAANI ILAAGIAFVA AGLSNIIGAI VYISANAGAP AAAAAAAKKN AYSYGWSFYF GALSFIAA E AAGVLAVAAA IARAAAAAAA ARAA |
-Macromolecule #5: Voltage-dependent calcium channel gamma-8 subunit
| Macromolecule | Name: Voltage-dependent calcium channel gamma-8 subunit / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 43.371742 KDa |
| Sequence | String: ESLKRWNEER GLWCEKGVQV LLTTIGAFSA FGLMTIAIST DYWLYTRALI CNTTNLTAGD DGPPHRGGSG SSEKKDPGGL THSGLWRIC CLEGLKRGVC VKINHFPEDT DYDHDSAEYL LRVVRASSIF PILSAILLLL GGVCVAASRV YKSKRNIILG A GILFVAAG ...String: ESLKRWNEER GLWCEKGVQV LLTTIGAFSA FGLMTIAIST DYWLYTRALI CNTTNLTAGD DGPPHRGGSG SSEKKDPGGL THSGLWRIC CLEGLKRGVC VKINHFPEDT DYDHDSAEYL LRVVRASSIF PILSAILLLL GGVCVAASRV YKSKRNIILG A GILFVAAG LSNIIGVIVY ISANAGEPGP KRDEEKKNHY SYGWSFYFGG LSFILAEVIG VLAVNIYIER SREAHCQSRS DL LKAGGGA GGSGGSGPSA ILRLPSYRFR YRRRSRSSSR GSSEASPSRD ASPGGPGGPG FASTDISMYT LSRDPSKGSV AAG LASAGG GGSGAGVGAY GGAAGAAGGG GAGSERDRGS SAGFLTLHNA FPKEAASGVT VTVTGPPAAP APAPAPPAPA APAP GTLSK EAAASNTNTL NRKTTPV UniProtKB: Voltage-dependent calcium channel gamma-8 subunit |
-Macromolecule #6: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(tri...
| Macromolecule | Name: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate type: ligand / ID: 6 / Number of copies: 23 / Formula: POV |
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| Molecular weight | Theoretical: 760.076 Da |
| Chemical component information | ![]() ChemComp-POV: |
-Macromolecule #7: TETRADECANE
| Macromolecule | Name: TETRADECANE / type: ligand / ID: 7 / Number of copies: 3 / Formula: C14 |
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| Molecular weight | Theoretical: 198.388 Da |
| Chemical component information | ![]() ChemComp-C14: |
-Macromolecule #8: 6-[2-chloro-6-(trifluoromethoxy)phenyl]-1H-benzimidazol-2-ol
| Macromolecule | Name: 6-[2-chloro-6-(trifluoromethoxy)phenyl]-1H-benzimidazol-2-ol type: ligand / ID: 8 / Number of copies: 2 / Formula: XVD |
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| Molecular weight | Theoretical: 328.674 Da |
| Chemical component information | ![]() ChemComp-XVD: |
-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 | 0.12 mg/mL |
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| Buffer | pH: 8 |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 1.0 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Authors
United States, 1 items
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Processing
FIELD EMISSION GUN

