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- PDB-5b3j: Activation of NMDA receptors and the mechanism of inhibition by i... -
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Basic information
Entry | Database: PDB / ID: 5b3j | |||||||||
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Title | Activation of NMDA receptors and the mechanism of inhibition by ifenprodil | |||||||||
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![]() | TRANSPORT PROTEIN / NMDA receptor | |||||||||
Function / homology | ![]() cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / sensory organ development / sensitization / regulation of cAMP/PKA signal transduction / EPHB-mediated forward signaling / auditory behavior / Assembly and cell surface presentation of NMDA receptors / dendritic branch ...cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / sensory organ development / sensitization / regulation of cAMP/PKA signal transduction / EPHB-mediated forward signaling / auditory behavior / Assembly and cell surface presentation of NMDA receptors / dendritic branch / response to hydrogen sulfide / response to other organism / positive regulation of inhibitory postsynaptic potential / apical dendrite / regulation of ARF protein signal transduction / response to methylmercury / fear response / response to carbohydrate / cellular response to dsRNA / interleukin-1 receptor binding / negative regulation of dendritic spine maintenance / cellular response to lipid / positive regulation of glutamate secretion / response to growth hormone / Synaptic adhesion-like molecules / regulation of monoatomic cation transmembrane transport / NMDA glutamate receptor activity / RAF/MAP kinase cascade / response to manganese ion / NMDA selective glutamate receptor complex / ligand-gated sodium channel activity / calcium ion transmembrane import into cytosol / glutamate binding / protein heterotetramerization / response to zinc ion / heterocyclic compound binding / glycine binding / receptor clustering / parallel fiber to Purkinje cell synapse / suckling behavior / regulation of postsynaptic membrane potential / response to amine / small molecule binding / startle response / monoatomic cation transmembrane transport / associative learning / : / behavioral response to pain / response to magnesium ion / regulation of MAPK cascade / regulation of neuronal synaptic plasticity / action potential / extracellularly glutamate-gated ion channel activity / monoatomic cation transport / positive regulation of excitatory postsynaptic potential / Unblocking of NMDA receptors, glutamate binding and activation / long-term memory / cellular response to manganese ion / behavioral fear response / postsynaptic density, intracellular component / glutamate receptor binding / neuron development / synaptic cleft / multicellular organismal response to stress / detection of mechanical stimulus involved in sensory perception of pain / response to electrical stimulus / monoatomic cation channel activity / glutamate-gated receptor activity / response to mechanical stimulus / response to fungicide / D2 dopamine receptor binding / cell adhesion molecule binding / ionotropic glutamate receptor binding / presynaptic active zone membrane / glutamate-gated calcium ion channel activity / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / sodium ion transmembrane transport / cellular response to forskolin / response to amphetamine / response to cytokine / ionotropic glutamate receptor signaling pathway / positive regulation of synaptic transmission, glutamatergic / hippocampal mossy fiber to CA3 synapse / protein tyrosine kinase binding / hippocampus development / learning / regulation of membrane potential / excitatory postsynaptic potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / cellular response to amino acid stimulus / response to nicotine / response to cocaine / regulation of long-term neuronal synaptic plasticity / synaptic membrane / response to lead ion / postsynaptic density membrane / terminal bouton / : / cellular response to growth factor stimulus Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | ![]() ![]() ![]() | |||||||||
![]() | Tajima, N. / Karakas, E. / Grant, T. / Simorowski, N. / Diaz-Avalos, R. / Grigorieff, N. / Furukawa, H. | |||||||||
Funding support | ![]()
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![]() | ![]() 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 |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 414.1 KB | Display | ![]() |
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PDB format | ![]() | 324.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 3352C ![]() 3353C ![]() 3354C ![]() 3355C ![]() 3356C ![]() 5fxgC ![]() 5fxhC ![]() 5fxiC ![]() 5fxjC ![]() 5fxkC C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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2 | ![]()
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3 | ![]()
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4 | ![]()
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Unit cell |
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Components
-Protein , 2 types, 4 molecules ABCD
#1: Protein | Mass: 42932.055 Da / Num. of mol.: 2 / Fragment: UNP residues 23-405 / Mutation: N61Q, N371Q Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #2: Protein | Mass: 41367.902 Da / Num. of mol.: 2 / Fragment: UNP residues 31-394 / Mutation: N348D Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Antibody , 2 types, 4 molecules EHFL
#3: Antibody | Mass: 23914.783 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #4: Antibody | Mass: 23675.170 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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-Non-polymers , 2 types, 108 molecules 


#5: Chemical | ChemComp-NA / |
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#6: Water | ChemComp-HOH / |
-Details
Has protein modification | Y |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.71 Å3/Da / Density % sol: 54.59 % |
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Crystal grow | Temperature: 291 K / Method: vapor diffusion, hanging drop / pH: 4.5 Details: 0.1M sodium acetate, 27% PEG3350, 2.2M sodium formate, 0.05 M calcium chloride |
-Data collection
Diffraction | Mean temperature: 80 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS PILATUS3 6M / Detector: PIXEL / Date: Apr 14, 2014 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1 Å / Relative weight: 1 |
Reflection | Resolution: 2.9→50 Å / Num. obs: 57592 / % possible obs: 91.4 % / Redundancy: 4 % / Rmerge(I) obs: 0.099 / Net I/σ(I): 8.5 |
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Processing
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Refinement | Method to determine structure: ![]()
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 2.9→29.93 Å
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Refine LS restraints |
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LS refinement shell |
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