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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-4575 | |||||||||
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| Title | Full length GluA1/2-gamma8 complex | |||||||||
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Keywords | AMPAR / ion channel / GluA1 / GluA2 / tarp / MEMBRANE PROTEIN | |||||||||
| 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 / positive regulation of membrane potential / COPII-mediated vesicle transport / 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 / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / L-type voltage-gated calcium channel complex / myosin V binding / neuron spine / postsynaptic neurotransmitter receptor diffusion trapping / proximal dendrite / LGI-ADAM interactions / protein phosphatase 2B binding / Trafficking of AMPA receptors / regulation of AMPA receptor activity / response to arsenic-containing substance / regulation of monoatomic ion transmembrane transport / channel regulator activity / ligand-gated calcium channel activity / cellular response to L-glutamate / cellular response to dsRNA / dendritic spine membrane / beta-2 adrenergic receptor binding / long-term synaptic depression / Synaptic adhesion-like molecules / cellular response to peptide hormone stimulus / spine synapse / dendritic spine cytoplasm / dendritic spine neck / cellular response to amine stimulus / dendritic spine head / response to psychosocial stress / peptide hormone receptor binding / response to morphine / neuronal cell body membrane / spinal cord development / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity / perisynaptic space / protein kinase A binding / Trafficking of GluR2-containing AMPA receptors / AMPA glutamate receptor activity / response to lithium ion / transmission of nerve impulse / AMPA glutamate receptor clustering / behavioral response to pain / kainate selective glutamate receptor activity / immunoglobulin binding / adenylate cyclase binding / asymmetric synapse / AMPA glutamate receptor complex / response to electrical stimulus / regulation of receptor recycling / extracellularly glutamate-gated ion channel activity / cellular response to glycine / ionotropic glutamate receptor complex / 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 / long-term memory / voltage-gated calcium channel activity / postsynaptic density, intracellular component / response to fungicide / neuronal action potential / regulation of synaptic transmission, glutamatergic / positive regulation of synaptic transmission, glutamatergic / extracellular ligand-gated monoatomic ion channel activity / glutamate-gated receptor activity / cytoskeletal protein binding / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / 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 / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / positive regulation of excitatory postsynaptic potential / dendritic shaft / synaptic membrane / SNARE binding / PDZ domain binding / response to cocaine / neuromuscular junction / calcium channel regulator activity / synaptic transmission, glutamatergic / cellular response to amino acid stimulus / establishment of protein localization / protein tetramerization / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 6.3 Å | |||||||||
Authors | Herguedas B / Garcia-Nafria J | |||||||||
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
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
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Downloads & links
-EMDB archive
| Map data | emd_4575.map.gz | 6.6 MB | EMDB map data format | |
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| Header (meta data) | emd-4575-v30.xml emd-4575.xml | 28.1 KB 28.1 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_4575_fsc.xml | 9.2 KB | Display | FSC data file |
| Images | emd_4575.png | 65.2 KB | ||
| Filedesc metadata | emd-4575.cif.gz | 9 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-4575 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-4575 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6qkzMC ![]() 4572C ![]() 6qkcC C: citing same article ( M: atomic model generated by this map |
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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_4575.map.gz / Format: CCP4 / Size: 40.6 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: 1.4 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : GluA1/A2 bound to gamma-8
| Entire | Name: GluA1/A2 bound to gamma-8 |
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| Components |
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-Supramolecule #1: GluA1/A2 bound to gamma-8
| Supramolecule | Name: GluA1/A2 bound to gamma-8 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 447 kDa/nm |
-Macromolecule #1: GluA1
| Macromolecule | Name: GluA1 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 100.739602 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: ADYKDDDDKN FPNNIQIGGL FPNQQSQEHA AFRFALSQLT EPPKLLPQID IVNISDSFEM TYRFCSQFSK GVYAIFGFYE RRTVNMLTS FCGALHVCFI TPSFPVDTSN QFVLQLRPEL QEALISIIDH YKWQTFVYIY DADRGLSVLQ RVLDTAAEKN W QVTAVNIL ...String: ADYKDDDDKN FPNNIQIGGL FPNQQSQEHA AFRFALSQLT EPPKLLPQID IVNISDSFEM TYRFCSQFSK GVYAIFGFYE RRTVNMLTS FCGALHVCFI TPSFPVDTSN QFVLQLRPEL QEALISIIDH YKWQTFVYIY DADRGLSVLQ RVLDTAAEKN W QVTAVNIL TTTEEGYRML FQDLEKKKER LVVVDCESER LNAILGQIVK LEKNGIGYHY ILANLGFMDI DLNKFKESGA NV TGFQLVN YTDTIPARIM QQWRTSDSRD HTRVDWKRPK YTSALTYDGV KVMAEAFQSL RRQRIDISRR GNAGDCLANP AVP WGQGID IQRALQQVRF EGLTGNVQFN EKGRRTNYTL HVIEMKHDGI RKIGYWNEDD KFVPAATDAQ AGGDNSSVQN RTYI VTTIL EDPYVMLKKN ANQFEGNDRY EGYCVELAAE IAKHVGYSYR LEIVSDGKYG ARDPDTKAWN GMVGELVYGR ADVAV APLT ITLVREEVID FSKPFMSLGI SIMIKKPQKS KPGVFSFLDP LAYEIWMCIV FAYIGVSVVL FLVSRFSPYE WHSEEF EEG RDQTTSDQSN EFGIFNSLWF SLGAFMQQGC DISPRSLSGR IVGGVWWFFT LIIISSYTAN LAAFLTVERM VSPIESA ED LAKQTEIAYG TLEAGSTKEF FRRSKIAVFE KMWTYMKSAE PSVFVRTTEE GMIRVRKSKG KYAYLLESTM NEYIEQRK P CDTMKVGGNL DSKGYGIATP KGSALRGPVN LAVLKLSEQG VLDKLKSKWW YDKGECGSKD SGSKDKTSAL SLSNVAGVF YILIGGLGLA MLVALIEFCY KSRSESKRMK GFCLIPQQSI NEAIRTSTLP RNSGAGASGG GGSGENGRVV SQDFPKSMQS IPCMSHSSG MPLGATGL UniProtKB: Glutamate receptor 1 |
-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: 93.880078 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: VSSNSIQIGG LFPRGADQEY SAFRVGMVQF STSEFRLTPH IDNLEVANSF AVTNAFCSQF SRGVYAIFGF YDKKSVNTIT SFCGTLHVS FITPSFPTDG THPFVIQMRP DLKGALLSLI EYYQWDKFAY LYDSDRGLST LQAVLDSAAE KKWQVTAINV G NINNDKKD ...String: VSSNSIQIGG LFPRGADQEY SAFRVGMVQF STSEFRLTPH IDNLEVANSF AVTNAFCSQF SRGVYAIFGF YDKKSVNTIT SFCGTLHVS FITPSFPTDG THPFVIQMRP DLKGALLSLI EYYQWDKFAY LYDSDRGLST LQAVLDSAAE KKWQVTAINV G NINNDKKD ETYRSLFQDL ELKKERRVIL DCERDKVNDI VDQVITIGKH VKGYHYIIAN LGFTDGDLLK IQFGGANVSG FQ IVDYDDS LVSKFIERWS TLEEKEYPGA HTATIKYTSA LTYDAVQVMT EAFRNLRKQR IEISRRGNAG DCLANPAVPW GQG VEIERA LKQVQVEGLS GNIKFDQNGK RINYTINIME LKTNGPRKIG YWSEVDKMVV TLTELPSGND TSGLENKTVV VTTI LESPY VMMKKNHEML EGNERYEGYC VDLAAEIAKH CGFKYKLTIV GDGKYGARDA DTKIWNGMVG ELVYGKADIA IAPLT ITLV REEVIDFSKP FMSLGISIMI KKPQKSKPGV FSFLDPLAYE IWMCIVFAYI GVSVVLFLVS RFSPYEWHTE EFEDGR ETQ SSESTNEFGI FNSLWFSLGA FMRQGCDISP RSLSGRIVGG VWWFFTLIII SSYTANLAAF LTVERMVSPI ESAEDLS KQ TEIAYGTLDS GSTKEFFRRS KIAVFDKMWT YMRSAEPSVF VRTTAEGVAR VRKSKGKYAY LLESTMNEYI EQRKPCDT M KVGGNLDSKG YGIATPKGSS LGTPVNLAVL KLSEQGVLDK LKNKWWYDKG ECGAKDSGSK EKTSALSLSN VAGVFYILV GGLGLAMLVA LIEFCYKSRA EAKRMKVAKN PQNINPSSS UniProtKB: Glutamate receptor 2 |
-Macromolecule #3: Voltage-dependent calcium channel gamma-8 subunit
| Macromolecule | Name: Voltage-dependent calcium channel gamma-8 subunit / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 43.592008 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: GESLKRWNEE RGLWCEKGVQ VLLTTIGAFA AFGLMTIAIS TDYWLYTRAL ICNTTNLTAG DDGPPHRGGS GSSEKKDPGG LTHSGLWRI CCLEGLKRGV CVKINHFPED TDYDHDSSEY LLRVVRASSI FPILSAILLL LGGVCVAASR VYKSKRNIIL G AGILFVAA ...String: GESLKRWNEE RGLWCEKGVQ VLLTTIGAFA AFGLMTIAIS TDYWLYTRAL ICNTTNLTAG DDGPPHRGGS GSSEKKDPGG LTHSGLWRI CCLEGLKRGV CVKINHFPED TDYDHDSSEY LLRVVRASSI FPILSAILLL LGGVCVAASR VYKSKRNIIL G AGILFVAA GLSNIIGVIV YISANAGEPG PKRDEEKKNH YSYGWSFYFG GLSFILAEVI GVLAVNIYIE RSREAHCQSR SD LLKAGGG AGGSGGSGPS AILRLPSYRF RYRRRSRSSS RGSSEASPSR DASPGGPGGP GFASTDISMY TLSRDPSKGS VAA GLASAG GGGGGAGVGA YGGAAGAAGG GGTGSERDRG SSAGFLTLHN AFPKEAASGV TVTVTGPPAA PAPAPPAPAA PAPG TLSKE AAASNTNTLN RKLEVLFQ UniProtKB: Voltage-dependent calcium channel gamma-8 subunit |
-Macromolecule #6: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-s...
| Macromolecule | Name: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide type: ligand / ID: 6 / Number of copies: 4 / Formula: E2Q |
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| Molecular weight | Theoretical: 336.28 Da |
| Chemical component information | ![]() ChemComp-E2Q: |
-Macromolecule #7: 2-acetamido-2-deoxy-beta-D-glucopyranose
| Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 7 / Number of copies: 2 / Formula: NAG |
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| Molecular weight | Theoretical: 221.208 Da |
| Chemical component information | ![]() ChemComp-NAG: |
-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 | 0.4 mg/mL |
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| Buffer | pH: 8 Details: 25 mM TRIS, pH 8, 150 mM NaCl and 0.1 % digitonin (w/v) |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV Details: 3uL on grid, 60 sec incubation and 4sec blotting time. |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Temperature | Min: 100.0 K / Max: 100.0 K |
| Specialist optics | Phase plate: VOLTA PHASE PLATE / Energy filter - Slit width: 20 eV |
| Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Dimensions - Width: 3838 pixel / Digitization - Dimensions - Height: 3710 pixel / Number grids imaged: 3 / Number real images: 5005 / Average exposure time: 14.0 sec. / Average electron dose: 32.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: -0.9 µm / Nominal defocus min: -0.2 µm / Nominal magnification: 105000 |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
| Initial model |
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| Refinement | Space: REAL / Protocol: RIGID BODY FIT | ||||||||
| Output model | ![]() PDB-6qkz: |
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Z (Sec.)
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Homo sapiens (human)





