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- PDB-6wi1: GluN1b-GluN2B NMDA receptor in active conformation stabilized by ... -

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Basic information

Entry
Database: PDB / ID: 6wi1
TitleGluN1b-GluN2B NMDA receptor in active conformation stabilized by inter-GluN1b-GluN2B subunit cross-linking
Components
  • Ionotropic glutamate receptor , NMDA receptor GluN1b
  • Ionotropic glutamate receptor , NMDA receptor GluN2B
KeywordsMEMBRANE PROTEIN / NMDARs / Ligand-gated ion channels / METAL TRANSPORT / Ionotropic glutamate receptor
Function / homology
Function and homology information


neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential / cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / regulation of postsynaptic cytosolic calcium ion concentration / NMDA selective glutamate receptor signaling pathway / sensory organ development / sensitization / fear response / pons maturation ...neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential / cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / regulation of postsynaptic cytosolic calcium ion concentration / NMDA selective glutamate receptor signaling pathway / sensory organ development / sensitization / fear response / pons maturation / regulation of cell communication / positive regulation of Schwann cell migration / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors / neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration / olfactory learning / conditioned taste aversion / regulation of protein kinase A signaling / protein localization to postsynaptic membrane / apical dendrite / dendritic branch / regulation of respiratory gaseous exchange / propylene metabolic process / response to glycine / response to other organism / response to methylmercury / voltage-gated monoatomic cation channel activity / response to morphine / glutamate-gated calcium ion channel activity / positive regulation of cysteine-type endopeptidase activity / cellular response to dsRNA / regulation of monoatomic cation transmembrane transport / response to carbohydrate / interleukin-1 receptor binding / negative regulation of dendritic spine maintenance / cellular response to lipid / positive regulation of glutamate secretion / NMDA glutamate receptor activity / NMDA selective glutamate receptor complex / RAF/MAP kinase cascade / response to growth hormone / Synaptic adhesion-like molecules / parallel fiber to Purkinje cell synapse / calcium ion transmembrane import into cytosol / protein heterotetramerization / response to manganese ion / glutamate binding / positive regulation of reactive oxygen species biosynthetic process / neuromuscular process / startle response / regulation of synapse assembly / action potential / glycine binding / positive regulation of calcium ion transport into cytosol / regulation of neuronal synaptic plasticity / male mating behavior / regulation of dendrite morphogenesis / regulation of axonogenesis / receptor clustering / heterocyclic compound binding / suckling behavior / behavioral response to pain / monoatomic cation transmembrane transport / response to amine / social behavior / small molecule binding / ligand-gated monoatomic ion channel activity / monoatomic cation transport / positive regulation of excitatory postsynaptic potential / regulation of MAPK cascade / response to magnesium ion / associative learning / excitatory synapse / behavioral fear response / positive regulation of dendritic spine maintenance / extracellularly glutamate-gated ion channel activity / multicellular organismal response to stress / cellular response to organic cyclic compound / Unblocking of NMDA receptors, glutamate binding and activation / long-term memory / glutamate receptor binding / regulation of postsynaptic membrane potential / D2 dopamine receptor binding / phosphatase binding / calcium ion homeostasis / synaptic cleft / cellular response to manganese ion / prepulse inhibition / positive regulation of synaptic transmission / detection of mechanical stimulus involved in sensory perception of pain / response to mechanical stimulus / response to electrical stimulus / regulation of neuron apoptotic process / presynaptic active zone membrane / cellular response to forskolin / response to amphetamine / response to fungicide / monoatomic cation channel activity / glutamate-gated receptor activity / sensory perception of pain
Similarity search - Function
Glutamate [NMDA] receptor, epsilon subunit, C-terminal / N-methyl D-aspartate receptor 2B3 C-terminus / 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 ...Glutamate [NMDA] receptor, epsilon subunit, C-terminal / N-methyl D-aspartate receptor 2B3 C-terminus / 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 ionotropic, NMDA 1 / Glutamate receptor ionotropic, NMDA 2B
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.62 Å
AuthorsChou, T. / Tajima, N. / Furukawa, H.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)NS111745 United States
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)MH085926 United States
CitationJournal: Cell / Year: 2020
Title: Structural Basis of Functional Transitions in Mammalian NMDA Receptors.
Authors: Tsung-Han Chou / Nami Tajima / Annabel Romero-Hernandez / Hiro Furukawa /
Abstract: Excitatory neurotransmission meditated by glutamate receptors including N-methyl-D-aspartate receptors (NMDARs) is pivotal to brain development and function. NMDARs are heterotetramers composed of ...Excitatory neurotransmission meditated by glutamate receptors including N-methyl-D-aspartate receptors (NMDARs) is pivotal to brain development and function. NMDARs are heterotetramers composed of GluN1 and GluN2 subunits, which bind glycine and glutamate, respectively, to activate their ion channels. Despite importance in brain physiology, the precise mechanisms by which activation and inhibition occur via subunit-specific binding of agonists and antagonists remain largely unknown. Here, we show the detailed patterns of conformational changes and inter-subunit and -domain reorientation leading to agonist-gating and subunit-dependent competitive inhibition by providing multiple structures in distinct ligand states at 4 Å or better. The structures reveal that activation and competitive inhibition by both GluN1 and GluN2 antagonists occur by controlling the tension of the linker between the ligand-binding domain and the transmembrane ion channel of the GluN2 subunit. Our results provide detailed mechanistic insights into NMDAR pharmacology, activation, and inhibition, which are fundamental to the brain physiology.
History
DepositionApr 8, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 15, 2020Provider: repository / Type: Initial release
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / database_PDB_caveat / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_chiral / pdbx_validate_close_contact / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.Cartn_x / _atom_site.Cartn_y ..._atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_entity_id / _chem_comp.name / _database_PDB_caveat.text / _pdbx_entity_nonpoly.entity_id / _pdbx_entity_nonpoly.name / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_chiral.auth_asym_id / _pdbx_validate_chiral.auth_seq_id / _pdbx_validate_close_contact.auth_asym_id_1 / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_1 / _pdbx_validate_close_contact.auth_seq_id_2 / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Aug 5, 2020Group: Database references / Structure summary / Category: chem_comp / citation
Item: _chem_comp.pdbx_synonyms / _citation.journal_volume ..._chem_comp.pdbx_synonyms / _citation.journal_volume / _citation.page_first / _citation.page_last

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Structure visualization

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Assembly

Deposited unit
A: Ionotropic glutamate receptor , NMDA receptor GluN1b
B: Ionotropic glutamate receptor , NMDA receptor GluN2B
C: Ionotropic glutamate receptor , NMDA receptor GluN1b
D: Ionotropic glutamate receptor , NMDA receptor GluN2B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)396,70916
Polymers393,2414
Non-polymers3,46712
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Ionotropic glutamate receptor , NMDA receptor GluN1b /


Mass: 97741.727 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P35439*PLUS
#2: Protein Ionotropic glutamate receptor , NMDA receptor GluN2B /


Mass: 98878.930 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q00960*PLUS
#3: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][a-D-GlcpNAc]{}}}LINUCSPDB-CARE
#4: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 8
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
Has ligand of interestN

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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: NMDA receptor GluN1b/2B functional ion channel complex
Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Rattus norvegicus (Norway rat)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 85 % / Chamber temperature: 295 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 64.5 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM softwareName: cisTEM / Version: 1.0.0 / Category: 3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 3.62 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 155641 / Symmetry type: POINT

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