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- PDB-5fxk: GluN1b-GluN2B NMDA receptor structure-Class Y -

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Basic information

Entry
Database: PDB / ID: 5fxk
TitleGluN1b-GluN2B NMDA receptor structure-Class Y
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


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 / sensory organ development / sensitization / pons maturation / regulation of cell communication / positive regulation of Schwann cell migration ...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 / sensory organ development / sensitization / pons maturation / regulation of cell communication / positive regulation of Schwann cell migration / EPHB-mediated forward signaling / neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration / Assembly and cell surface presentation of NMDA receptors / response to hydrogen sulfide / olfactory learning / regulation of protein kinase A signaling / conditioned taste aversion / dendritic branch / regulation of respiratory gaseous exchange / protein localization to postsynaptic membrane / response to other organism / positive regulation of inhibitory postsynaptic potential / apical dendrite / propylene metabolic process / response to glycine / regulation of ARF protein signal transduction / fear response / response to methylmercury / voltage-gated monoatomic cation channel activity / positive regulation of cysteine-type endopeptidase activity / cellular response to dsRNA / response to carbohydrate / negative regulation of dendritic spine maintenance / interleukin-1 receptor binding / regulation of monoatomic cation transmembrane transport / cellular response to lipid / response to morphine / NMDA glutamate receptor activity / positive regulation of glutamate secretion / response to growth hormone / Synaptic adhesion-like molecules / NMDA selective glutamate receptor complex / RAF/MAP kinase cascade / glutamate-gated calcium ion channel activity / parallel fiber to Purkinje cell synapse / response to manganese ion / NMDA selective glutamate receptor signaling pathway / calcium ion transmembrane import into cytosol / protein heterotetramerization / neuromuscular process / glutamate binding / positive regulation of reactive oxygen species biosynthetic process / regulation of synapse assembly / action potential / glycine binding / positive regulation of calcium ion transport into cytosol / regulation of dendrite morphogenesis / regulation of axonogenesis / male mating behavior / heterocyclic compound binding / suckling behavior / startle response / behavioral response to pain / monoatomic cation transmembrane transport / response to amine / receptor clustering / monoatomic cation transport / regulation of neuronal synaptic plasticity / associative learning / positive regulation of excitatory postsynaptic potential / response to magnesium ion / social behavior / regulation of MAPK cascade / ligand-gated monoatomic ion channel activity / cellular response to organic cyclic compound / extracellularly glutamate-gated ion channel activity / cellular response to glycine / excitatory synapse / positive regulation of dendritic spine maintenance / neuron development / Unblocking of NMDA receptors, glutamate binding and activation / behavioral fear response / small molecule binding / phosphatase binding / regulation of postsynaptic membrane potential / postsynaptic density, intracellular component / cellular response to manganese ion / calcium ion homeostasis / glutamate receptor binding / D2 dopamine receptor binding / prepulse inhibition / multicellular organismal response to stress / monoatomic cation channel activity / long-term memory / detection of mechanical stimulus involved in sensory perception of pain / regulation of neuron apoptotic process / response to electrical stimulus / synaptic cleft / presynaptic active zone membrane / glutamate-gated receptor activity
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 ...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: 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 RECEPTOR 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-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 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
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 6.4 Å / Num. of particles: 15000
Details: SIDE CHAINS WERE NOT INCLUDED IN THE MODEL SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-3356. (DEPOSITION ID: 14328).
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. atoms15386 0 0 0 15386

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