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- EMDB-4572: GluA1/2 In complex with auxiliary subunit gamma-8 -

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Basic information

Entry
Database: EMDB / ID: EMD-4572
TitleGluA1/2 In complex with auxiliary subunit gamma-8
Map dataPostprocesed map with B= -150 of sharpening
Sample
  • Complex: GluA1/A2 bound to gamma-8
    • Protein or peptide: Glutamate receptor 1
    • Protein or peptide: Glutamate receptor 2GRIA2
    • Protein or peptide: Voltage-dependent calcium channel gamma-8 subunit
  • Ligand: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide
  • Ligand: (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
Function / homology
Function and homology information


Phase 2 - plateau phase / Phase 0 - rapid depolarisation / Cargo concentration in the ER / cellular response to amine stimulus / axonal spine / chemical synaptic transmission, postsynaptic / COPII-mediated vesicle transport / positive regulation of membrane potential / cellular response to ammonium ion / neurotransmitter receptor transport, postsynaptic endosome to lysosome ...Phase 2 - plateau phase / Phase 0 - rapid depolarisation / Cargo concentration in the ER / cellular response to amine stimulus / axonal spine / chemical synaptic transmission, postsynaptic / COPII-mediated vesicle transport / positive regulation of membrane potential / cellular response to ammonium ion / neurotransmitter receptor transport, postsynaptic endosome to lysosome / L-type voltage-gated calcium channel complex / neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration / LGI-ADAM interactions / neuron spine / myosin V binding / Trafficking of AMPA receptors / regulation of AMPA receptor activity / neurotransmitter receptor internalization / channel regulator activity / protein phosphatase 2B binding / dendritic spine membrane / postsynaptic neurotransmitter receptor diffusion trapping / response to arsenic-containing substance / cellular response to dsRNA / Synaptic adhesion-like molecules / long-term synaptic depression / beta-2 adrenergic receptor binding / protein kinase A binding / cellular response to peptide hormone stimulus / neuronal cell body membrane / spine synapse / spinal cord development / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / response to lithium ion / perisynaptic space / cellular response to glycine / transmission of nerve impulse / AMPA glutamate receptor activity / regulation of postsynaptic membrane neurotransmitter receptor levels / Trafficking of GluR2-containing AMPA receptors / immunoglobulin binding / calcium channel regulator activity / AMPA glutamate receptor complex / neuronal action potential / kainate selective glutamate receptor activity / excitatory synapse / ionotropic glutamate receptor complex / extracellularly glutamate-gated ion channel activity / adenylate cyclase binding / cellular response to organic cyclic compound / asymmetric synapse / G-protein alpha-subunit binding / regulation of postsynaptic membrane potential / regulation of receptor recycling / Unblocking of NMDA receptors, glutamate binding and activation / long-term memory / voltage-gated calcium channel activity / glutamate receptor binding / positive regulation of synaptic transmission / response to electrical stimulus / glutamate-gated receptor activity / presynaptic active zone membrane / response to fungicide / regulation of synaptic transmission, glutamatergic / cellular response to brain-derived neurotrophic factor stimulus / somatodendritic compartment / synapse assembly / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor binding / cytoskeletal protein binding / ionotropic glutamate receptor signaling pathway / dendrite cytoplasm / monoatomic ion transmembrane transport / positive regulation of synaptic transmission, glutamatergic / SNARE binding / dendritic shaft / response to cocaine / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic membrane / synaptic transmission, glutamatergic / PDZ domain binding / cellular response to amino acid stimulus / postsynaptic density membrane / protein tetramerization / regulation of synaptic plasticity / modulation of chemical synaptic transmission / neuromuscular junction / Schaffer collateral - CA1 synapse / establishment of protein localization / terminal bouton / receptor internalization / synaptic vesicle membrane / response to organic cyclic compound / cerebral cortex development / response to peptide hormone / response to toxic substance / cellular response to growth factor stimulus
Similarity search - Function
Voltage-dependent calcium channel, gamma-8 subunit / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Bacterial extracellular solute-binding proteins, family 3 / Solute-binding protein family 3/N-terminal domain of MltF / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / : / Ligand-gated ion channel ...Voltage-dependent calcium channel, gamma-8 subunit / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Bacterial extracellular solute-binding proteins, family 3 / Solute-binding protein family 3/N-terminal domain of MltF / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / : / Ligand-gated ion channel / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor / Eukaryotic homologues of bacterial periplasmic substrate binding proteins. / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I
Similarity search - Domain/homology
Glutamate receptor 1 / Glutamate receptor 2 / Voltage-dependent calcium channel gamma-8 subunit
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.4 Å
AuthorsHerguedas B / Garcia-Nafria J / Greger IG
CitationJournal: Science / Year: 2019
Title: 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.
History
DepositionJan 28, 2019-
Header (metadata) releaseMar 27, 2019-
Map releaseMar 27, 2019-
UpdateJul 29, 2020-
Current statusJul 29, 2020Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.03
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.03
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6qkc
  • Surface level: 0.03
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_4572.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationPostprocesed map with B= -150 of sharpening
Voxel sizeX=Y=Z: 1.4 Å
Density
Contour LevelBy AUTHOR: 0.03 / Movie #1: 0.03
Minimum - Maximum-0.070399046 - 0.12937184
Average (Standard dev.)0.00047585755 (±0.003930227)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions220220220
Spacing220220220
CellA=B=C: 308.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.41.41.4
M x/y/z220220220
origin x/y/z0.0000.0000.000
length x/y/z308.000308.000308.000
α/β/γ90.00090.00090.000
start NX/NY/NZ-383-383-383
NX/NY/NZ768768768
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS220220220
D min/max/mean-0.0700.1290.000

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Supplemental data

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Sample components

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Entire : GluA1/A2 bound to gamma-8

EntireName: GluA1/A2 bound to gamma-8
Components
  • Complex: GluA1/A2 bound to gamma-8
    • Protein or peptide: Glutamate receptor 1
    • Protein or peptide: Glutamate receptor 2GRIA2
    • Protein or peptide: Voltage-dependent calcium channel gamma-8 subunit
  • Ligand: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide
  • Ligand: (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate

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Supramolecule #1: GluA1/A2 bound to gamma-8

SupramoleculeName: GluA1/A2 bound to gamma-8 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Rattus norvegicus (Norway rat)
Recombinant expressionOrganism: Homo sapiens (human)
Molecular weightTheoretical: 447 kDa/nm

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Macromolecule #1: Glutamate receptor 1

MacromoleculeName: Glutamate receptor 1 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 102.66193 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MPYIFAFFCT GFLGAVVGAD YKDDDDKNFP NNIQIGGLFP NQQSQEHAAF RFALSQLTEP PKLLPQIDIV NISDSFEMTY RFCSQFSKG VYAIFGFYER RTVNMLTSFC GALHVCFITP SFPVDTSNQF VLQLRPELQE ALISIIDHYK WQTFVYIYDA D RGLSVLQR ...String:
MPYIFAFFCT GFLGAVVGAD YKDDDDKNFP NNIQIGGLFP NQQSQEHAAF RFALSQLTEP PKLLPQIDIV NISDSFEMTY RFCSQFSKG VYAIFGFYER RTVNMLTSFC GALHVCFITP SFPVDTSNQF VLQLRPELQE ALISIIDHYK WQTFVYIYDA D RGLSVLQR VLDTAAEKNW QVTAVNILTT TEEGYRMLFQ DLEKKKERLV VVDCESERLN AILGQIVKLE KNGIGYHYIL AN LGFMDID LNKFKESGAN VTGFQLVNYT DTIPARIMQQ WRTSDSRDHT RVDWKRPKYT SALTYDGVKV MAEAFQSLRR QRI DISRRG NAGDCLANPA VPWGQGIDIQ RALQQVRFEG LTGNVQFNEK GRRTNYTLHV IEMKHDGIRK IGYWNEDDKF VPAA TDAQA GGDNSSVQNR TYIVTTILED PYVMLKKNAN QFEGNDRYEG YCVELAAEIA KHVGYSYRLE IVSDGKYGAR DPDTK AWNG MVGELVYGRA DVAVAPLTIT LVREEVIDFS KPFMSLGISI MIKKPQKSKP GVFSFLDPLA YEIWMCIVFA YIGVSV VLF LVSRFSPYEW HSEEFEEGRD QTTSDQSNEF GIFNSLWFSL GAFMQQGCDI SPRSLSGRIV GGVWWFFTLI IISSYTA NL AAFLTVERMV SPIESAEDLA KQTEIAYGTL EAGSTKEFFR RSKIAVFEKM WTYMKSAEPS VFVRTTEEGM IRVRKSKG K YAYLLESTMN EYIEQRKPCD TMKVGGNLDS KGYGIATPKG SALRGPVNLA VLKLSEQGVL DKLKSKWWYD KGECGSKDS GSKDKTSALS LSNVAGVFYI LIGGLGLAML VALIEFCYKS RSESKRMKGF CLIPQQSINE AIRTSTLPRN SGAGASGGGG SGENGRVVS QDFPKSMQSI PCMSHSSGMP LGATGL

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Macromolecule #2: Glutamate receptor 2

MacromoleculeName: Glutamate receptor 2 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 96.247055 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MQKIMHISVL LSPVLWGLIF GVSSNSIQIG GLFPRGADQE YSAFRVGMVQ FSTSEFRLTP HIDNLEVANS FAVTNAFCSQ FSRGVYAIF GFYDKKSVNT ITSFCGTLHV SFITPSFPTD GTHPFVIQMR PDLKGALLSL IEYYQWDKFA YLYDSDRGLS T LQAVLDSA ...String:
MQKIMHISVL LSPVLWGLIF GVSSNSIQIG GLFPRGADQE YSAFRVGMVQ FSTSEFRLTP HIDNLEVANS FAVTNAFCSQ FSRGVYAIF GFYDKKSVNT ITSFCGTLHV SFITPSFPTD GTHPFVIQMR PDLKGALLSL IEYYQWDKFA YLYDSDRGLS T LQAVLDSA AEKKWQVTAI NVGNINNDKK DETYRSLFQD LELKKERRVI LDCERDKVND IVDQVITIGK HVKGYHYIIA NL GFTDGDL LKIQFGGANV SGFQIVDYDD SLVSKFIERW STLEEKEYPG AHTATIKYTS ALTYDAVQVM TEAFRNLRKQ RIE ISRRGN AGDCLANPAV PWGQGVEIER ALKQVQVEGL SGNIKFDQNG KRINYTINIM ELKTNGPRKI GYWSEVDKMV VTLT ELPSG NDTSGLENKT VVVTTILESP YVMMKKNHEM LEGNERYEGY CVDLAAEIAK HCGFKYKLTI VGDGKYGARD ADTKI WNGM VGELVYGKAD IAIAPLTITL VREEVIDFSK PFMSLGISIM IKKPQKSKPG VFSFLDPLAY EIWMCIVFAY IGVSVV LFL VSRFSPYEWH TEEFEDGRET QSSESTNEFG IFNSLWFSLG AFMRQGCDIS PRSLSGRIVG GVWWFFTLII ISSYTAN LA AFLTVERMVS PIESAEDLSK QTEIAYGTLD SGSTKEFFRR SKIAVFDKMW TYMRSAEPSV FVRTTAEGVA RVRKSKGK Y AYLLESTMNE YIEQRKPCDT MKVGGNLDSK GYGIATPKGS SLGTPVNLAV LKLSEQGVLD KLKNKWWYDK GECGAKDSG SKEKTSALSL SNVAGVFYIL VGGLGLAMLV ALIEFCYKSR AEAKRMKVAK NPQNINPSSS

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Macromolecule #3: Voltage-dependent calcium channel gamma-8 subunit

MacromoleculeName: Voltage-dependent calcium channel gamma-8 subunit / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 43.576004 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: GESLKRWNEE RGLWCEKGVQ VLLTTIGAFA AFGLMTIAIS TDYWLYTRAL ICNTTNLTAG DDGPPHRGGS GSSEKKDPGG LTHSGLWRI CCLEGLKRGV CVKINHFPED TDYDHDSAEY LLRVVRASSI FPILSAILLL LGGVCVAASR VYKSKRNIIL G AGILFVAA ...String:
GESLKRWNEE RGLWCEKGVQ VLLTTIGAFA AFGLMTIAIS TDYWLYTRAL ICNTTNLTAG DDGPPHRGGS GSSEKKDPGG LTHSGLWRI CCLEGLKRGV CVKINHFPED TDYDHDSAEY 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

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Macromolecule #4: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-s...

MacromoleculeName: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide
type: ligand / ID: 4 / Number of copies: 4 / Formula: E2Q
Molecular weightTheoretical: 336.28 Da
Chemical component information

ChemComp-E2Q:
6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide / antagonist*YM / NBQX

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Macromolecule #5: (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate

MacromoleculeName: (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate / type: ligand / ID: 5 / Number of copies: 12 / Formula: OLC
Molecular weightTheoretical: 356.54 Da
Chemical component information

ChemComp-OLC:
(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.4 mg/mL
BufferpH: 8
Details: 25 mM TRIS, pH 8, 150 mM NaCl and 0.1 % digitonin (w/v)
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 2.0 nm / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen 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

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: -0.9 µm / Nominal defocus min: -0.2 µm / Nominal magnification: 105000
Specialist opticsPhase plate: VOLTA PHASE PLATE / Energy filter - Slit width: 20 eV
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
TemperatureMin: 100.0 K / Max: 100.0 K
Image recordingFilm 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
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: Gctf (ver. 1.06)
Startup modelType of model: NONE / Details: ab initio model generated with RELION
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final 3D classificationSoftware - Name: RELION (ver. 3.0)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final reconstructionApplied symmetry - Point group: C2 (2 fold cyclic) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 4.4 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 114730
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial model(PDB ID:
,
,
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RefinementSpace: RECIPROCAL / Protocol: FLEXIBLE FIT
Output model

PDB-6qkc:
GluA1/2 In complex with auxiliary subunit gamma-8

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