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- PDB-2pbw: Crystal Structure of the Ligand-Binding Core of iGluR5 in Complex... -
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Basic information
Entry | Database: PDB / ID: 2pbw | ||||||
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Title | Crystal Structure of the Ligand-Binding Core of iGluR5 in Complex with the Partial agonist Domoic Acid at 2.5 A Resolution | ||||||
![]() | Glutamate receptor, ionotropic kainate 1 | ||||||
![]() | MEMBRANE PROTEIN / Agonist Complex | ||||||
Function / homology | ![]() gamma-aminobutyric acid secretion / negative regulation of synaptic transmission, GABAergic / L-glutamate transmembrane transporter activity / positive regulation of gamma-aminobutyric acid secretion / Activation of Na-permeable kainate receptors / kainate selective glutamate receptor complex / Activation of Ca-permeable Kainate Receptor / negative regulation of synaptic transmission, glutamatergic / regulation of short-term neuronal synaptic plasticity / inhibitory postsynaptic potential ...gamma-aminobutyric acid secretion / negative regulation of synaptic transmission, GABAergic / L-glutamate transmembrane transporter activity / positive regulation of gamma-aminobutyric acid secretion / Activation of Na-permeable kainate receptors / kainate selective glutamate receptor complex / Activation of Ca-permeable Kainate Receptor / negative regulation of synaptic transmission, glutamatergic / regulation of short-term neuronal synaptic plasticity / inhibitory postsynaptic potential / synaptic transmission, GABAergic / glutamate binding / adult behavior / behavioral response to pain / modulation of excitatory postsynaptic potential / membrane depolarization / kainate selective glutamate receptor activity / ionotropic glutamate receptor complex / extracellularly glutamate-gated ion channel activity / glutamate-gated receptor activity / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / presynaptic modulation of chemical synaptic transmission / ionotropic glutamate receptor signaling pathway / excitatory postsynaptic potential / SNARE binding / synaptic transmission, glutamatergic / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / establishment of localization in cell / regulation of membrane potential / positive regulation of synaptic transmission, GABAergic / postsynaptic density membrane / modulation of chemical synaptic transmission / regulation of synaptic plasticity / terminal bouton / presynaptic membrane / nervous system development / scaffold protein binding / chemical synaptic transmission / postsynaptic density / receptor complex / neuronal cell body / glutamatergic synapse / synapse / dendrite / identical protein binding / membrane / plasma membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Hald, H. / Naur, P. / Gajhede, M. / Kastrup, J.S. | ||||||
![]() | ![]() Title: Partial agonism and antagonism of the ionotropic glutamate receptor iGLuR5: structures of the ligand-binding core in complex with domoic acid and 2-amino-3-[5-tert-butyl-3-(phosphonomethoxy)-4- ...Title: Partial agonism and antagonism of the ionotropic glutamate receptor iGLuR5: structures of the ligand-binding core in complex with domoic acid and 2-amino-3-[5-tert-butyl-3-(phosphonomethoxy)-4-isoxazolyl]propionic acid. Authors: Hald, H. / Naur, P. / Pickering, D.S. / Sprogoe, D. / Madsen, U. / Timmermann, D.B. / Ahring, P.K. / Liljefors, T. / Schousboe, A. / Egebjerg, J. / Gajhede, M. / Kastrup, J.S. #1: ![]() Title: Crystal structure of the kainate receptor GluR5 ligand-binding core in complex with (S)-glutamate. Authors: Naur, P. / Vestergaard, B. / Skov, L.K. / Egebjerg, J. / Gajhede, M. / Kastrup, J.S. #2: ![]() Title: Structure of the kainate receptor subunit GluR6 agonist-binding domain complexed with domoic acid. Authors: Nanao, M.H. / Green, T. / Stern-Bach, Y. / Heinemann, S.F. / Choe, S. #3: ![]() Title: Crystal structures of the kainate receptor GluR5 ligand binding core dimer with novel GluR5-selective antagonists. Authors: Mayer, M.L. / Ghosal, A. / Dolman, N.P. / Jane, D.E. | ||||||
History |
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Remark 999 | sequence There is a Ala -> Gly sequence conflict at residue 477 in the UniProt database. | ||||||
Remark 300 | BIOMOLECULE: 1 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT WHICH CONSISTS OF 2 CHAIN(S) ...BIOMOLECULE: 1 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT WHICH CONSISTS OF 2 CHAIN(S). Authors state the functional receptor is a tetramer built of dimers-of-dimers. However, in the crystal only the dimer is present. |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 121.1 KB | Display | ![]() |
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PDB format | ![]() | 93.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1 MB | Display | ![]() |
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Full document | ![]() | 1 MB | Display | |
Data in XML | ![]() | 23.8 KB | Display | |
Data in CIF | ![]() | 33.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1vsoC ![]() 1fwoS C: citing same article ( S: Starting model for refinement |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Unit cell |
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Noncrystallographic symmetry (NCS) | NCS oper:
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Components
#1: Protein | Mass: 29108.453 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #2: Chemical | #3: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.51 Å3/Da / Density % sol: 51.06 % |
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Crystal grow | Temperature: 279 K / Method: vapor diffusion, hanging drop / pH: 6.5 Details: PEG4000, Lithium sulfate, Cacodylate, VAPOR DIFFUSION, HANGING DROP, temperature 279K, pH 6.50 |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MAR scanner 345 mm plate / Detector: IMAGE PLATE / Date: Jun 30, 2005 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9537 Å / Relative weight: 1 |
Reflection | Resolution: 2.5→20 Å / Num. obs: 20832 / % possible obs: 96.8 % / Observed criterion σ(I): -3 / Redundancy: 3.2 % / Biso Wilson estimate: 27.2 Å2 / Rsym value: 0.114 / Net I/σ(I): 12.7 |
Reflection shell | Resolution: 2.5→2.59 Å / Mean I/σ(I) obs: 3.4 / Rsym value: 0.32 / % possible all: 96.8 |
-Phasing
Phasing MR | Rfactor: 0.521 / Cor.coef. Fo:Fc: 0.378 / Cor.coef. Io to Ic: 0.256
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1FWO, CHAIN A Resolution: 2.5→19.59 Å / Rfactor Rfree error: 0.008 / Data cutoff high absF: 2593844.39 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: ENGH & HUBER Details: RESIDUES A1-A3, A252-A257, B1-B3 AND B257 WERE NOT LOCATED IN THE ELECTRON DENSITY MAP.
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 21.43 Å2 / ksol: 0.354208 e/Å3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 16.98 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.5→19.59 Å
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Refine LS restraints |
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Refine LS restraints NCS | NCS model details: RESTRAINED | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
LS refinement shell | Resolution: 2.5→2.61 Å / Rfactor Rfree error: 0.028 / Total num. of bins used: 8
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Xplor file |
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