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- PDB-5fxi: GluN1b-GluN2B NMDA receptor structure in non-active-2 conformation -

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Basic information

Entry
Database: PDB / ID: 5fxi
TitleGluN1b-GluN2B NMDA receptor structure in non-active-2 conformation
Components
  • N-METHYL-D-ASPARTATE RECEPTOR GLUN1
  • N-METHYL-D-ASPARTATE RECEPTOR GLUN2B
KeywordsTRANSPORT PROTEIN / SIGNALING PROTEIN / NMDA RECEPTOR / GLUTAMATE RECEPTOR / GLUN1 / GLUN2B / ION CHANNEL
Function / homology
Function and homology information


cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / sensory organ development / positive regulation of Schwann cell migration / pons maturation / sensitization / regulation of cell communication / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors ...cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / sensory organ development / positive regulation of Schwann cell migration / pons maturation / sensitization / regulation of cell communication / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors / response to hydrogen sulfide / auditory behavior / olfactory learning / conditioned taste aversion / dendritic branch / response to other organism / regulation of respiratory gaseous exchange / apical dendrite / fear response / regulation of ARF protein signal transduction / protein localization to postsynaptic membrane / transmitter-gated monoatomic ion channel activity / positive regulation of inhibitory postsynaptic potential / response to methylmercury / suckling behavior / response to manganese ion / response to glycine / interleukin-1 receptor binding / response to carbohydrate / propylene metabolic process / cellular response to dsRNA / cellular response to lipid / response to growth hormone / heterocyclic compound binding / negative regulation of dendritic spine maintenance / positive regulation of glutamate secretion / RAF/MAP kinase cascade / regulation of monoatomic cation transmembrane transport / NMDA glutamate receptor activity / Synaptic adhesion-like molecules / voltage-gated monoatomic cation channel activity / response to glycoside / NMDA selective glutamate receptor complex / glutamate binding / ligand-gated sodium channel activity / neurotransmitter receptor complex / response to morphine / regulation of axonogenesis / neuromuscular process / calcium ion transmembrane import into cytosol / regulation of dendrite morphogenesis / protein heterotetramerization / male mating behavior / regulation of synapse assembly / glycine binding / response to amine / regulation of cAMP/PKA signal transduction / receptor clustering / small molecule binding / startle response / parallel fiber to Purkinje cell synapse / positive regulation of reactive oxygen species biosynthetic process / monoatomic cation transmembrane transport / behavioral response to pain / regulation of MAPK cascade / positive regulation of calcium ion transport into cytosol / cellular response to glycine / extracellularly glutamate-gated ion channel activity / regulation of postsynaptic membrane potential / response to magnesium ion / action potential / associative learning / response to electrical stimulus / excitatory synapse / positive regulation of dendritic spine maintenance / monoatomic ion channel complex / social behavior / monoatomic cation transport / regulation of neuronal synaptic plasticity / glutamate receptor binding / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of excitatory postsynaptic potential / detection of mechanical stimulus involved in sensory perception of pain / long-term memory / response to mechanical stimulus / neuron development / synaptic cleft / phosphatase binding / prepulse inhibition / positive regulation of synaptic transmission, glutamatergic / behavioral fear response / multicellular organismal response to stress / postsynaptic density, intracellular component / monoatomic cation channel activity / response to fungicide / calcium ion homeostasis / glutamate-gated receptor activity / regulation of long-term synaptic depression / cell adhesion molecule binding / regulation of neuron apoptotic process
Similarity search - Function
Glutamate [NMDA] receptor, epsilon subunit, C-terminal / N-methyl D-aspartate receptor 2B3 C-terminus / : / : / 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 / : ...Glutamate [NMDA] receptor, epsilon subunit, C-terminal / N-methyl D-aspartate receptor 2B3 C-terminus / : / : / 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 ionotropic, NMDA 1 / Glutamate receptor ionotropic, NMDA 2B
Similarity search - Component
Biological speciesRATTUS NORVEGICUS (Norway rat)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6.4 Å
AuthorsTajima, N. / Karakas, E. / Grant, T. / Simorowski, N. / Diaz-Avalos, R. / Grigorieff, N. / Furukawa, H.
CitationJournal: Nature / Year: 2016
Title: Activation of NMDA receptors and the mechanism of inhibition by ifenprodil.
Authors: Nami Tajima / Erkan Karakas / Timothy Grant / Noriko Simorowski / Ruben Diaz-Avalos / Nikolaus Grigorieff / Hiro Furukawa /
Abstract: The physiology of N-methyl-d-aspartate (NMDA) receptors is fundamental to brain development and function. NMDA receptors are ionotropic glutamate receptors that function as heterotetramers composed ...The physiology of N-methyl-d-aspartate (NMDA) receptors is fundamental to brain development and function. NMDA receptors are ionotropic glutamate receptors that function as heterotetramers composed mainly of GluN1 and GluN2 subunits. Activation of NMDA receptors requires binding of neurotransmitter agonists to a ligand-binding domain (LBD) and structural rearrangement of an amino-terminal domain (ATD). Recent crystal structures of GluN1-GluN2B NMDA receptors bound to agonists and an allosteric inhibitor, ifenprodil, represent the allosterically inhibited state. However, how the ATD and LBD move to activate the NMDA receptor ion channel remains unclear. Here we applied X-ray crystallography, single-particle electron cryomicroscopy and electrophysiology to rat NMDA receptors to show that, in the absence of ifenprodil, the bi-lobed structure of GluN2 ATD adopts an open conformation accompanied by rearrangement of the GluN1-GluN2 ATD heterodimeric interface, altering subunit orientation in the ATD and LBD and forming an active receptor conformation that gates the ion channel.
History
DepositionMar 2, 2016Deposition site: PDBE / Processing site: PDBE
Revision 1.0May 11, 2016Provider: repository / Type: Initial release
Revision 1.1Jun 15, 2016Group: Database references
Revision 1.2Apr 19, 2017Group: Other
Revision 1.3Aug 23, 2017Group: Data collection / Category: em_image_scans / em_software
Item: _em_software.fitting_id / _em_software.image_processing_id / _em_software.name
Revision 1.4Dec 18, 2019Group: Other / Category: atom_sites
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3]
Revision 1.5May 8, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

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Assembly

Deposited unit
A: N-METHYL-D-ASPARTATE RECEPTOR GLUN1
B: N-METHYL-D-ASPARTATE RECEPTOR GLUN2B
C: N-METHYL-D-ASPARTATE RECEPTOR GLUN1
D: N-METHYL-D-ASPARTATE RECEPTOR GLUN2B


Theoretical massNumber of molelcules
Total (without water)376,3044
Polymers376,3044
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein N-METHYL-D-ASPARTATE RECEPTOR GLUN1 / GLUN1 / GLUTAMATE NMDA RECEPTOR SUBUNIT ZETA-1 / N-METHYL-D-ASPARTATE RECEPTOR SUBUNIT NR1 / NMD-R1 ...GLUN1 / GLUTAMATE NMDA RECEPTOR SUBUNIT ZETA-1 / N-METHYL-D-ASPARTATE RECEPTOR SUBUNIT NR1 / NMD-R1 / N-METHYL-D-ASPARTATE RECEPTO GLUN1


Mass: 95220.727 Da / Num. of mol.: 2 / Fragment: UNP RESIDUES 23-868 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) RATTUS NORVEGICUS (Norway rat) / Plasmid: MODIFIED PFL AND PUCDM / Cell line (production host): SF9 / Production host: SPODOPTERA FRUGIPERDA (fall armyworm) / References: UniProt: P35439
#2: Protein N-METHYL-D-ASPARTATE RECEPTOR GLUN2B / GLUN1 / GLUTAMATE NMDA RECEPTOR SUBUNIT ZETA-1 / N-METHYL-D-A SPARTATE RECEPTOR SUBUNIT NR1 / NMD- ...GLUN1 / GLUTAMATE NMDA RECEPTOR SUBUNIT ZETA-1 / N-METHYL-D-A SPARTATE RECEPTOR SUBUNIT NR1 / NMD-R1 / N-METHYL-D-ASPARTATE RECEPTOR GLUN1


Mass: 92931.078 Da / Num. of mol.: 2 / Fragment: UNP RESIDUES 27-852 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) RATTUS NORVEGICUS (Norway rat) / Plasmid: MODIFIED PFL AND PUCDM / Cell line (production host): SF9 / Production host: SPODOPTERA FRUGIPERDA (fall armyworm) / References: UniProt: Q00960

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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 / Type: COMPLEX
Buffer solutionName: 200 MM NACL, 20 MM HEPES PH 7.0, 10 MM GLYCINE, 10 MM L-GLUTAMATE, 0.002 % MNG-3
pH: 7
Details: 200 MM NACL, 20 MM HEPES PH 7.0, 10 MM GLYCINE, 10 MM L-GLUTAMATE, 0.002 % MNG-3
SpecimenConc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: HOLEY CARBON
VitrificationInstrument: FEI VITROBOT MARK II / Cryogen name: ETHANE / Details: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS / Date: Aug 10, 2015
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 22500 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 100 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM software
IDNameVersionCategory
1CTFFIND4CTF correction
2Cootmodel fitting
3Unblurother
4FREALIGN3D reconstruction
CTF correctionDetails: EACH PARTICLE
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 6.4 Å / Num. of particles: 16000
Details: IDE CHAINS WERE EXCLUDED FROM THE MODEL SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-3354. (DEPOSITION ID: 14324).
Symmetry type: POINT
Atomic model buildingProtocol: OTHER / Space: REAL / Target criteria: REAL SPACE / Details: METHOD--REAL SPACE
RefinementHighest resolution: 6.4 Å
Refinement stepCycle: LAST / Highest resolution: 6.4 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms15318 0 0 0 15318

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