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- PDB-8c1s: Transmembrane domain of resting state homomeric GluA2 F231A mutan... -

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Basic information

Entry
Database: PDB / ID: 8c1s
TitleTransmembrane domain of resting state homomeric GluA2 F231A mutant AMPA receptor in complex with TARP gamma 2
Components
  • Glutamate receptor 2
  • Voltage-dependent calcium channel gamma-2 subunit
KeywordsMEMBRANE PROTEIN / AMPAR / ion channels / neurotransmission
Function / homology
Function and homology information


Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / LGI-ADAM interactions / positive regulation of AMPA receptor activity / cerebellar mossy fiber / Trafficking of AMPA receptors / postsynaptic neurotransmitter receptor diffusion trapping / membrane hyperpolarization / regulation of AMPA receptor activity ...Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / LGI-ADAM interactions / positive regulation of AMPA receptor activity / cerebellar mossy fiber / Trafficking of AMPA receptors / postsynaptic neurotransmitter receptor diffusion trapping / membrane hyperpolarization / regulation of AMPA receptor activity / channel regulator activity / protein targeting to membrane / nervous system process / voltage-gated calcium channel complex / regulation of synaptic plasticity by chemical substance / spine synapse / dendritic spine neck / dendritic spine cytoplasm / response to phorbol 13-acetate 12-myristate / cellular response to amine stimulus / dendritic spine head / neurotransmitter receptor localization to postsynaptic specialization membrane / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity / perisynaptic space / response to lithium ion / Trafficking of GluR2-containing AMPA receptors / AMPA glutamate receptor activity / AMPA glutamate receptor clustering / regulation of receptor recycling / neuromuscular junction development / kainate selective glutamate receptor activity / transmission of nerve impulse / AMPA glutamate receptor complex / extracellularly glutamate-gated ion channel activity / ionotropic glutamate receptor complex / cellular response to glycine / membrane depolarization / immunoglobulin binding / asymmetric synapse / Unblocking of NMDA receptors, glutamate binding and activation / glutamate receptor binding / regulation of postsynaptic membrane neurotransmitter receptor levels / positive regulation of synaptic transmission / conditioned place preference / regulation of synaptic transmission, glutamatergic / response to fungicide / voltage-gated calcium channel activity / extracellular ligand-gated monoatomic ion channel activity / cytoskeletal protein binding / glutamate-gated receptor activity / positive regulation of synaptic transmission, glutamatergic / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / glutamate-gated calcium ion channel activity / somatodendritic compartment / presynaptic active zone membrane / ionotropic glutamate receptor binding / ionotropic glutamate receptor signaling pathway / excitatory synapse / dendrite cytoplasm / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite membrane / hippocampal mossy fiber to CA3 synapse / positive regulation of excitatory postsynaptic potential / calcium channel regulator activity / SNARE binding / dendritic shaft / synaptic membrane / establishment of protein localization / synaptic transmission, glutamatergic / PDZ domain binding / protein tetramerization / long-term synaptic potentiation / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / receptor internalization / cerebral cortex development / regulation of membrane potential / response to calcium ion / postsynaptic density membrane / modulation of chemical synaptic transmission / Schaffer collateral - CA1 synapse / terminal bouton / synaptic vesicle membrane / synaptic vesicle / amyloid-beta binding / presynapse / signaling receptor activity / growth cone / chemical synaptic transmission / scaffold protein binding / presynaptic membrane / dendritic spine / perikaryon / neuron projection / postsynaptic membrane / postsynaptic density / external side of plasma membrane / axon / neuronal cell body
Similarity search - Function
Butyryl-CoA Dehydrogenase, subunit A; domain 3 - #150 / Voltage-dependent calcium channel, gamma-2 subunit / : / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Butyryl-CoA Dehydrogenase, subunit A; domain 3 / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel ...Butyryl-CoA Dehydrogenase, subunit A; domain 3 - #150 / Voltage-dependent calcium channel, gamma-2 subunit / : / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Butyryl-CoA Dehydrogenase, subunit A; domain 3 / 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 / Up-down Bundle / Mainly Alpha
Similarity search - Domain/homology
(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate / PALMITIC ACID / Chem-POV / Glutamate receptor 2 / Voltage-dependent calcium channel gamma-2 subunit
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsZhang, D. / Ivica, J. / Krieger, J.M. / Ho, H. / Yamashita, K. / Cais, O. / Greger, I.
Funding support United Kingdom, 2items
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 21, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 30, 2023Provider: repository / Type: Initial release
Revision 1.1Sep 13, 2023Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.title / _citation.year
Revision 1.2Sep 20, 2023Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title ..._citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.3Oct 11, 2023Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 1.4Nov 20, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Glutamate receptor 2
B: Glutamate receptor 2
C: Glutamate receptor 2
D: Glutamate receptor 2
E: Voltage-dependent calcium channel gamma-2 subunit
F: Voltage-dependent calcium channel gamma-2 subunit
G: Voltage-dependent calcium channel gamma-2 subunit
H: Voltage-dependent calcium channel gamma-2 subunit
hetero molecules


Theoretical massNumber of molelcules
Total (without water)549,15922
Polymers543,1548
Non-polymers6,00514
Water1448
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 2 types, 8 molecules ABCDEFGH

#1: Protein
Glutamate receptor 2 / GluR-2 / AMPA-selective glutamate receptor 2 / GluR-B / GluR-K2 / Glutamate receptor ionotropic / ...GluR-2 / AMPA-selective glutamate receptor 2 / GluR-B / GluR-K2 / Glutamate receptor ionotropic / AMPA 2 / GluA2


Mass: 99981.031 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Gria2, Glur2 / Cell line (production host): Expi293 / Production host: Homo sapiens (human) / References: UniProt: P19491
#2: Protein
Voltage-dependent calcium channel gamma-2 subunit / Neuronal voltage-gated calcium channel gamma-2 subunit / Stargazin / Transmembrane AMPAR regulatory ...Neuronal voltage-gated calcium channel gamma-2 subunit / Stargazin / Transmembrane AMPAR regulatory protein gamma-2 / TARP gamma-2


Mass: 35807.555 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Cacng2, Stg / Cell line (production host): Expi293 / Production host: Homo sapiens (human) / References: UniProt: Q71RJ2

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Non-polymers , 4 types, 22 molecules

#3: Chemical
ChemComp-PLM / PALMITIC ACID


Mass: 256.424 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C16H32O2
#4: Chemical
ChemComp-OLC / (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate / 1-Oleoyl-R-glycerol


Mass: 356.540 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C21H40O4
#5: Chemical
ChemComp-POV / (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate / POPC


Mass: 760.076 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C42H82NO8P / Comment: phospholipid*YM
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 8 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestN
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: homomeric GluA2 F231A mutant AMPA receptor in complex with TARP gamma 2
Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Rattus (rats)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2400 nm / Nominal defocus min: 1400 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: REFMAC / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 371741 / Symmetry type: POINT
Atomic model buildingSpace: RECIPROCAL / Details: Servalcat
RefinementResolution: 3→3 Å / Cor.coef. Fo:Fc: 0.893 / SU B: 9.606 / SU ML: 0.179 / ESU R: 0.403
Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES
Details: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT
RfactorNum. reflection% reflection
Rwork0.31936 --
obs0.31936 99899 100 %
Solvent computationSolvent model: PARAMETERS FOR MASK CACLULATION
Displacement parametersBiso mean: 111.331 Å2
Refinement stepCycle: 1 / Total: 10751
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
ELECTRON MICROSCOPYr_bond_refined_d0.0090.01211003
ELECTRON MICROSCOPYr_bond_other_d00.01610674
ELECTRON MICROSCOPYr_angle_refined_deg1.2811.62414806
ELECTRON MICROSCOPYr_angle_other_deg0.5581.5524515
ELECTRON MICROSCOPYr_dihedral_angle_1_deg4.90251310
ELECTRON MICROSCOPYr_dihedral_angle_2_deg22.399571
ELECTRON MICROSCOPYr_dihedral_angle_3_deg16.91101649
ELECTRON MICROSCOPYr_dihedral_angle_4_deg
ELECTRON MICROSCOPYr_chiral_restr0.0640.21640
ELECTRON MICROSCOPYr_gen_planes_refined0.0070.0212180
ELECTRON MICROSCOPYr_gen_planes_other0.0040.022684
ELECTRON MICROSCOPYr_nbd_refined
ELECTRON MICROSCOPYr_nbd_other
ELECTRON MICROSCOPYr_nbtor_refined
ELECTRON MICROSCOPYr_nbtor_other
ELECTRON MICROSCOPYr_xyhbond_nbd_refined
ELECTRON MICROSCOPYr_xyhbond_nbd_other
ELECTRON MICROSCOPYr_metal_ion_refined
ELECTRON MICROSCOPYr_metal_ion_other
ELECTRON MICROSCOPYr_symmetry_vdw_refined
ELECTRON MICROSCOPYr_symmetry_vdw_other
ELECTRON MICROSCOPYr_symmetry_hbond_refined
ELECTRON MICROSCOPYr_symmetry_hbond_other
ELECTRON MICROSCOPYr_symmetry_metal_ion_refined
ELECTRON MICROSCOPYr_symmetry_metal_ion_other
ELECTRON MICROSCOPYr_mcbond_it12.35610.1625306
ELECTRON MICROSCOPYr_mcbond_other12.35610.1625306
ELECTRON MICROSCOPYr_mcangle_it18.41218.1336594
ELECTRON MICROSCOPYr_mcangle_other18.41118.1356595
ELECTRON MICROSCOPYr_scbond_it14.19211.945697
ELECTRON MICROSCOPYr_scbond_other14.19111.9415698
ELECTRON MICROSCOPYr_scangle_it
ELECTRON MICROSCOPYr_scangle_other21.95621.2088213
ELECTRON MICROSCOPYr_long_range_B_refined29.158119.3743133
ELECTRON MICROSCOPYr_long_range_B_other29.158119.3743134
ELECTRON MICROSCOPYr_rigid_bond_restr
ELECTRON MICROSCOPYr_sphericity_free
ELECTRON MICROSCOPYr_sphericity_bonded
LS refinement shellResolution: 2.9→2.975 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0 0 -
Rwork1.096 7361 -
obs--100 %

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