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- PDB-5wen: GluA2 bound to GSG1L in digitonin, state 2 -

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Basic information

Entry
Database: PDB / ID: 5wen
TitleGluA2 bound to GSG1L in digitonin, state 2
ComponentsGlutamate receptor 2,Germ cell-specific gene 1-like protein
KeywordsTRANSPORT PROTEIN / Ion channel
Function / homology
Function and homology information


regulation of short-term neuronal synaptic plasticity / spine synapse / dendritic spine neck / dendritic spine cytoplasm / cellular response to amine stimulus / dendritic spine head / regulation of postsynaptic neurotransmitter receptor internalization / perisynaptic space / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity ...regulation of short-term neuronal synaptic plasticity / spine synapse / dendritic spine neck / dendritic spine cytoplasm / cellular response to amine stimulus / dendritic spine head / regulation of postsynaptic neurotransmitter receptor internalization / perisynaptic space / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity / AMPA glutamate receptor activity / response to lithium ion / Trafficking of GluR2-containing AMPA receptors / transmission of nerve impulse / AMPA glutamate receptor clustering / kainate selective glutamate receptor activity / cellular response to glycine / AMPA glutamate receptor complex / immunoglobulin binding / asymmetric synapse / extracellularly glutamate-gated ion channel activity / regulation of receptor recycling / ionotropic glutamate receptor complex / conditioned place preference / glutamate receptor binding / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission / regulation of synaptic transmission, glutamatergic / response to fungicide / glutamate-gated receptor activity / cytoskeletal protein binding / extracellular ligand-gated monoatomic ion channel activity / regulation of long-term synaptic depression / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / somatodendritic compartment / dendrite membrane / excitatory synapse / ionotropic glutamate receptor binding / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor signaling pathway / dendrite cytoplasm / synaptic membrane / positive regulation of excitatory postsynaptic potential / dendritic shaft / SNARE binding / PDZ domain binding / synaptic transmission, glutamatergic / protein tetramerization / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / establishment of protein localization / synapse organization / cerebral cortex development / postsynaptic density membrane / modulation of chemical synaptic transmission / receptor internalization / Schaffer collateral - CA1 synapse / terminal bouton / synaptic vesicle / long-term synaptic potentiation / synaptic vesicle membrane / signaling receptor activity / amyloid-beta binding / presynapse / growth cone / presynaptic membrane / scaffold protein binding / dendritic spine / chemical synaptic transmission / perikaryon / postsynaptic membrane / neuron projection / postsynaptic density / axon / external side of plasma membrane / neuronal cell body / synapse / dendrite / protein kinase binding / protein-containing complex binding / glutamatergic synapse / cell surface / endoplasmic reticulum / protein-containing complex / identical protein binding / membrane / plasma membrane
Similarity search - Function
GSG1-like / GSG1-like protein / : / 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 ...GSG1-like / GSG1-like protein / : / 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
Germ cell-specific gene 1-like protein / Glutamate receptor 2
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6.8 Å
AuthorsTwomey, E.C. / Yelshanskaya, M.V. / Grassucci, R.A. / Frank, J. / Sobolevsky, A.I.
Funding support United States, 5items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)NS093838 United States
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)NS083660 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)CA206573 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM029169 United States
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Nature / Year: 2017
Title: Channel opening and gating mechanism in AMPA-subtype glutamate receptors.
Authors: Edward C Twomey / Maria V Yelshanskaya / Robert A Grassucci / Joachim Frank / Alexander I Sobolevsky /
Abstract: AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid)-subtype ionotropic glutamate receptors mediate fast excitatory neurotransmission throughout the central nervous system. Gated by the ...AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid)-subtype ionotropic glutamate receptors mediate fast excitatory neurotransmission throughout the central nervous system. Gated by the neurotransmitter glutamate, AMPA receptors are critical for synaptic strength, and dysregulation of AMPA receptor-mediated signalling is linked to numerous neurological diseases. Here we use cryo-electron microscopy to solve the structures of AMPA receptor-auxiliary subunit complexes in the apo, antagonist- and agonist-bound states and determine the iris-like mechanism of ion channel opening. The ion channel selectivity filter is formed by the extended portions of the re-entrant M2 loops, while the helical portions of M2 contribute to extensive hydrophobic interfaces between AMPA receptor subunits in the ion channel. We show how the permeation pathway changes upon channel opening and identify conformational changes throughout the entire AMPA receptor that accompany activation and desensitization. Our findings provide a framework for understanding gating across the family of ionotropic glutamate receptors and the role of AMPA receptors in excitatory neurotransmission.
History
DepositionJul 10, 2017Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 2, 2017Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Aug 2, 2017Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Sep 13, 2017Group: Author supporting evidence / Database references / Category: citation / pdbx_audit_support
Item: _citation.journal_id_ISSN / _citation.journal_volume ..._citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _pdbx_audit_support.funding_organization
Revision 1.2Jul 18, 2018Group: Data collection / Experimental preparation / Category: em_sample_support / Item: _em_sample_support.grid_type
Revision 1.3Nov 20, 2019Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 2.0Aug 25, 2021Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Database references / Derived calculations
Category: atom_site / database_2 ...atom_site / database_2 / database_PDB_caveat / pdbx_validate_chiral / pdbx_validate_close_contact / struct_conn
Item: _atom_site.Cartn_x / _atom_site.Cartn_y ..._atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_atom_id / _atom_site.label_atom_id / _atom_site.type_symbol / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_validate_close_contact.auth_atom_id_2 / _struct_conn.ptnr2_label_atom_id
Revision 2.1Dec 25, 2024Group: Advisory / Data collection ...Advisory / Data collection / Derived calculations / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature / pdbx_validate_close_contact / struct_conn
Item: _em_admin.last_update
Revision 2.2May 21, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1May 21, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

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Assembly

Deposited unit
A: Glutamate receptor 2,Germ cell-specific gene 1-like protein
B: Glutamate receptor 2,Germ cell-specific gene 1-like protein
C: Glutamate receptor 2,Germ cell-specific gene 1-like protein
D: Glutamate receptor 2,Germ cell-specific gene 1-like protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)472,3436
Polymers469,8854
Non-polymers2,4592
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area26160 Å2
ΔGint-184 kcal/mol
Surface area161020 Å2

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Components

#1: Protein
Glutamate receptor 2,Germ cell-specific gene 1-like protein / 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 / GSG1-like protein


Mass: 117471.211 Da / Num. of mol.: 4
Fragment: UNP residues 25-847 and UNP residues 2-238 linked via LINKER GTG,UNP residues 25-847 and UNP residues 2-238 linked via LINKER GTG
Mutation: N241E, V382L, G384E, N385D, N392Q, V1151L,N241E, V382L, G384E, N385D, N392Q, V1151L
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat), (gene. exp.) Mus musculus (house mouse)
Gene: Gria2, Glur2, Gsg1l / Cell line (production host): HEK293 gnti-, HEK gnti- / Production host: Homo sapiens (human) / References: UniProt: P19491, UniProt: D3Z7H4
#2: Chemical ChemComp-AJP / Digitonin


Mass: 1229.312 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C56H92O29 / Comment: detergent*YM
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: GluA2 bound to GSG1L in digitonin, state 2 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenConc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: GluA2 bound to GSG1L in digitonin, state 2
Specimen supportDetails: Gold-gold grids, hydrogen and oxygen glow discharge (20s, 10 watts, 6.4 sccm H2, 27.5 sccm O2)
Grid material: GOLD / Grid mesh size: 200 divisions/in. / Grid type: C-flat-1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K

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Electron microscopy imaging

Experimental equipment
Model: Tecnai Polara / Image courtesy: FEI Company
MicroscopyModel: FEI POLARA 300
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: SPOT SCAN
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 67 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)
Image scansMovie frames/image: 40

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Processing

SoftwareName: PHENIX / Version: 1.11.1_2575 / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 6.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 18926 / Symmetry type: POINT
Atomic model buildingSpace: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00327952
ELECTRON MICROSCOPYf_angle_d0.80337796
ELECTRON MICROSCOPYf_dihedral_angle_d10.07616522
ELECTRON MICROSCOPYf_chiral_restr0.0474220
ELECTRON MICROSCOPYf_plane_restr0.0074752

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