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- EMDB-16391: Transmembrane domain of resting state homomeric GluA1 AMPA recept... -

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Basic information

Entry
Database: EMDB / ID: EMD-16391
TitleTransmembrane domain of resting state homomeric GluA1 AMPA receptor in complex with TARP gamma 3
Map data
Sample
  • Complex: Homomeric GluA1 AMPA receptor in complex with TARP gamma 3
    • Protein or peptide: Glutamate receptor 1 flip isoform
    • Protein or peptide: Voltage-dependent calcium channel gamma-3 subunit
  • Ligand: PALMITIC ACID
  • Ligand: (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
  • Ligand: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
  • Ligand: water
KeywordsAMPAR / ion channels / neurotransmission / MEMBRANE PROTEIN
Function / homology
Function and homology information


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 / neuron spine / myosin V binding / postsynaptic neurotransmitter receptor diffusion trapping ...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 / neuron spine / myosin V binding / postsynaptic neurotransmitter receptor diffusion trapping / proximal dendrite / regulation of AMPA receptor activity / regulation of monoatomic ion transmembrane transport / channel regulator activity / Trafficking of AMPA receptors / LGI-ADAM interactions / response to arsenic-containing substance / cellular response to L-glutamate / cellular response to dsRNA / dendritic spine membrane / long-term synaptic depression / beta-2 adrenergic receptor binding / Synaptic adhesion-like molecules / cellular response to peptide hormone stimulus / response to morphine / neuronal cell body membrane / protein kinase A binding / neurotransmitter receptor localization to postsynaptic specialization membrane / peptide hormone receptor binding / cellular response to amine stimulus / response to psychosocial stress / spinal cord development / perisynaptic space / Activation of AMPA receptors / AMPA glutamate receptor activity / transmission of nerve impulse / response to lithium ion / Trafficking of GluR2-containing AMPA receptors / behavioral response to pain / AMPA glutamate receptor complex / adenylate cyclase binding / immunoglobulin binding / asymmetric synapse / ionotropic glutamate receptor complex / excitatory synapse / conditioned place preference / response to electrical stimulus / regulation of receptor recycling / G-protein alpha-subunit binding / glutamate receptor binding / positive regulation of excitatory postsynaptic potential / Unblocking of NMDA receptors, glutamate binding and activation / long-term memory / positive regulation of synaptic transmission / positive regulation of synaptic transmission, glutamatergic / protein targeting / postsynaptic density, intracellular component / voltage-gated calcium channel activity / neuronal action potential / response to fungicide / glutamate-gated receptor activity / synapse assembly / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / somatodendritic compartment / ionotropic glutamate receptor binding / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / synaptic membrane / dendritic shaft / response to cocaine / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / PDZ domain binding / cellular response to amino acid stimulus / neuromuscular junction / response to nutrient levels / response to peptide hormone / postsynaptic density membrane / recycling endosome / cerebral cortex development / regulation of synaptic plasticity / modulation of chemical synaptic transmission / cellular response to growth factor stimulus / receptor internalization / small GTPase binding / response to toxic substance / Schaffer collateral - CA1 synapse / long-term synaptic potentiation / recycling endosome membrane / synaptic vesicle / cell-cell junction / synaptic vesicle membrane / intracellular protein localization / response to estradiol / G-protein beta-subunit binding / presynapse / amyloid-beta binding / cell body
Similarity search - Function
: / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel / : ...: / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel / : / 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 / Voltage-dependent calcium channel gamma-3 subunit
Similarity search - Component
Biological speciesRattus (rats) / Rattus norvegicus (Norway rat)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.7 Å
AuthorsZhang D / Ivica J / Krieger JM / Ho H / Yamashita K / Cais O / Greger I
Funding support United Kingdom, 2 items
OrganizationGrant numberCountry
Wellcome Trust223194/Z/21/Z United Kingdom
Medical Research Council (MRC, United Kingdom)MC_U105174197 United Kingdom
CitationJournal: Nature / Year: 2023
Title: Structural mobility tunes signalling of the GluA1 AMPA glutamate receptor.
Authors: Danyang Zhang / Josip Ivica / James M Krieger / Hinze Ho / Keitaro Yamashita / Imogen Stockwell / Rozbeh Baradaran / Ondrej Cais / Ingo H Greger /
Abstract: AMPA glutamate receptors (AMPARs), the primary mediators of excitatory neurotransmission in the brain, are either GluA2 subunit-containing and thus Ca-impermeable, or GluA2-lacking and Ca-permeable. ...AMPA glutamate receptors (AMPARs), the primary mediators of excitatory neurotransmission in the brain, are either GluA2 subunit-containing and thus Ca-impermeable, or GluA2-lacking and Ca-permeable. Despite their prominent expression throughout interneurons and glia, their role in long-term potentiation and their involvement in a range of neuropathologies, structural information for GluA2-lacking receptors is currently absent. Here we determine and characterize cryo-electron microscopy structures of the GluA1 homotetramer, fully occupied with TARPγ3 auxiliary subunits (GluA1/γ3). The gating core of both resting and open-state GluA1/γ3 closely resembles GluA2-containing receptors. However, the sequence-diverse N-terminal domains (NTDs) give rise to a highly mobile assembly, enabling domain swapping and subunit re-alignments in the ligand-binding domain tier that are pronounced in desensitized states. These transitions underlie the unique kinetic properties of GluA1. A GluA2 mutant (F231A) increasing NTD dynamics phenocopies this behaviour, and exhibits reduced synaptic responses, reflecting the anchoring function of the AMPAR NTD at the synapse. Together, this work underscores how the subunit-diverse NTDs determine subunit arrangement, gating properties and ultimately synaptic signalling efficiency among AMPAR subtypes.
History
DepositionDec 22, 2022-
Header (metadata) releaseAug 30, 2023-
Map releaseAug 30, 2023-
UpdateOct 23, 2024-
Current statusOct 23, 2024Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_16391.png

Downloads & links

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Map

FileDownload / File: emd_16391.map.gz / Format: CCP4 / Size: 51.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

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AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 238 pix.
= 252.28 Å		1.06 Å/pix.
x 238 pix.
= 252.28 Å		1.06 Å/pix.
x 238 pix.
= 252.28 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.06 Å
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Histogram (log scale)
Contour LevelBy AUTHOR: 0.014
Minimum - Maximum-0.04020802 - 0.08263837
Average (Standard dev.)0.0002164694 (±0.002074292)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin737373
Dimensions238238238
Spacing238238238
CellA=B=C: 252.27998 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_16391_msk_1.map
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Half map: #2

Fileemd_16391_half_map_1.map
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Half map: #1

Fileemd_16391_half_map_2.map
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Sample components

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Entire : Homomeric GluA1 AMPA receptor in complex with TARP gamma 3

EntireName: Homomeric GluA1 AMPA receptor in complex with TARP gamma 3
Components
  • Complex: Homomeric GluA1 AMPA receptor in complex with TARP gamma 3
    • Protein or peptide: Glutamate receptor 1 flip isoform
    • Protein or peptide: Voltage-dependent calcium channel gamma-3 subunit
  • Ligand: PALMITIC ACID
  • Ligand: (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
  • Ligand: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
  • Ligand: water

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Supramolecule #1: Homomeric GluA1 AMPA receptor in complex with TARP gamma 3

SupramoleculeName: Homomeric GluA1 AMPA receptor in complex with TARP gamma 3
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Rattus (rats)

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Macromolecule #1: Glutamate receptor 1 flip isoform

MacromoleculeName: Glutamate receptor 1 flip isoform / type: protein_or_peptide / ID: 1 / Number of copies: 4 / 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

UniProtKB: Glutamate receptor 1

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Macromolecule #2: Voltage-dependent calcium channel gamma-3 subunit

MacromoleculeName: Voltage-dependent calcium channel gamma-3 subunit / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 35.435332 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: RMCDRGIQML ITTVGAFAAF SLMTIAVGTD YWLYSRGVCR TKSTSDNETS RKNEEVMTHS GLWRTCCLEG AFRGVCKKID HFPEDADYE QDTAEYLLRA VRASSVFPIL SVTLLFFGGL CVAASEFHRS RHSVILSAGI FFVSAGLSNI IGIIVYISAN A GDPGQRDS ...String:
RMCDRGIQML ITTVGAFAAF SLMTIAVGTD YWLYSRGVCR TKSTSDNETS RKNEEVMTHS GLWRTCCLEG AFRGVCKKID HFPEDADYE QDTAEYLLRA VRASSVFPIL SVTLLFFGGL CVAASEFHRS RHSVILSAGI FFVSAGLSNI IGIIVYISAN A GDPGQRDS KKSYSYGWSF YFGAFSFIIA EIVGVVAVHI YIEKHQQLRA RSHSELLKKS TFARLPPYRY RFRRRSSSRS TE PRSRDLS PISKGFHTIP STDISMFTLS RDPSKLTMGT LLNSDRDHAF LQFHNSTPKE FKESLHNNPA NRRTTPV

UniProtKB: Voltage-dependent calcium channel gamma-3 subunit

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Macromolecule #3: PALMITIC ACID

MacromoleculeName: PALMITIC ACID / type: ligand / ID: 3 / Number of copies: 4 / Formula: PLM
Molecular weightTheoretical: 256.424 Da
Chemical component information

ChemComp-PLM:
PALMITIC ACID

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Macromolecule #4: (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate

MacromoleculeName: (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate / type: ligand / ID: 4 / Number of copies: 4 / Formula: OLC
Molecular weightTheoretical: 356.54 Da
Chemical component information

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

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Macromolecule #5: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(tri...

MacromoleculeName: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
type: ligand / ID: 5 / Number of copies: 8 / Formula: POV
Molecular weightTheoretical: 760.076 Da
Chemical component information

ChemComp-POV:
(2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate / phospholipid*YM

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Macromolecule #6: water

MacromoleculeName: water / type: ligand / ID: 6 / Number of copies: 32 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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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

BufferpH: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.4 µm / Nominal defocus min: 1.4000000000000001 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 252544
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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Atomic model buiding 1

DetailsServalcat
Output model

PDB-8c2i:
Transmembrane domain of resting state homomeric GluA1 AMPA receptor in complex with TARP gamma 3

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