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- PDB-1lb9: Crystal structure of the Non-desensitizing GluR2 ligand binding c... -

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Basic information

Entry
Database: PDB / ID: 1lb9
TitleCrystal structure of the Non-desensitizing GluR2 ligand binding core mutant (S1S2J-L483Y) in complex with antagonist DNQX at 2.3 A resolution
ComponentsGlutamate receptor 2
KeywordsMEMBRANE PROTEIN / AMPA receptor / GluR2 / S1S2 / ligand-binding core / Non-desensitizing / point-mutation / L483Y / antagonist / DNQX
Function / homology
Function and homology information


spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / perisynaptic space / AMPA glutamate receptor activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / immunoglobulin binding / AMPA glutamate receptor complex ...spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / perisynaptic space / AMPA glutamate receptor activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / immunoglobulin binding / AMPA glutamate receptor complex / kainate selective glutamate receptor activity / ionotropic glutamate receptor complex / extracellularly glutamate-gated ion channel activity / cellular response to glycine / asymmetric synapse / regulation of receptor recycling / Unblocking of NMDA receptors, glutamate binding and activation / glutamate receptor binding / positive regulation of synaptic transmission / glutamate-gated receptor activity / presynaptic active zone membrane / response to fungicide / regulation of synaptic transmission, glutamatergic / somatodendritic compartment / cellular response to brain-derived neurotrophic factor stimulus / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / cytoskeletal protein binding / ionotropic glutamate receptor signaling pathway / dendrite cytoplasm / SNARE binding / dendritic shaft / synaptic membrane / synaptic transmission, glutamatergic / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / PDZ domain binding / protein tetramerization / postsynaptic density membrane / ionotropic glutamate receptor binding / Schaffer collateral - CA1 synapse / modulation of chemical synaptic transmission / establishment of protein localization / terminal bouton / receptor internalization / cerebral cortex development / synaptic vesicle membrane / synaptic vesicle / presynapse / presynaptic membrane / signaling receptor activity / amyloid-beta binding / growth cone / scaffold protein binding / chemical synaptic transmission / postsynaptic membrane / perikaryon / dendritic spine / postsynaptic density / neuron projection / axon / neuronal cell body / glutamatergic synapse / synapse / dendrite / protein-containing complex binding / endoplasmic reticulum membrane / protein kinase binding / cell surface / endoplasmic reticulum / protein-containing complex / identical protein binding / membrane / plasma membrane
Similarity search - Function
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. ...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 II / Periplasmic binding protein-like I / D-Maltodextrin-Binding Protein; domain 2 / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
6,7-DINITROQUINOXALINE-2,3-DIONE / Glutamate receptor 2
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.3 Å
AuthorsSun, Y. / Olson, R. / Horning, M. / Armstrong, N. / Mayer, M. / Gouaux, E.
CitationJournal: Nature / Year: 2002
Title: Mechanism of glutamate receptor desensitization.
Authors: Sun, Y. / Olson, R. / Horning, M. / Armstrong, N. / Mayer, M. / Gouaux, E.
History
DepositionApr 2, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 5, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 16, 2017Group: Refinement description / Source and taxonomy / Category: entity_src_gen / software
Revision 1.4Oct 27, 2021Group: Database references / Derived calculations / Category: database_2 / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.5Aug 16, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Remark 999Sequence The native GLUR-2 is a membrane protein. The protein crystallized by the author is the ...Sequence The native GLUR-2 is a membrane protein. The protein crystallized by the author is the extracellular ligand binding domain of GLUR-2. Transmembrane regions were genetically removed and replaced with a Gly-Thr linker. The sequence, as a result, matches discontinuously with the reference database.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Glutamate receptor 2
B: Glutamate receptor 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)59,1405
Polymers58,5432
Non-polymers5963
Water3,297183
1
A: Glutamate receptor 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)29,5222
Polymers29,2721
Non-polymers2501
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Glutamate receptor 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)29,6183
Polymers29,2721
Non-polymers3462
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)62.276, 93.408, 97.866
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Glutamate receptor 2 / GLUR-2 / GLUR-B / GLUR-K2 / GLUTAMATE RECEPTOR IONOTROPIC AMPA 2


Mass: 29271.701 Da / Num. of mol.: 2 / Fragment: ligand binding core (flop) / Mutation: L483Y
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: GluR-2 / Plasmid: pETGQ / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P19491
#2: Chemical ChemComp-DNQ / 6,7-DINITROQUINOXALINE-2,3-DIONE / DNQX


Mass: 250.125 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C8H2N4O6 / Comment: antagonist*YM
#3: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 183 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.43 Å3/Da / Density % sol: 49.39 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 5
Details: PEG 4000, ammonium sulfate, sodium acetate, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K

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Data collection

DiffractionMean temperature: 110 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Apr 3, 2001
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.3→20 Å / Num. all: 24510 / Num. obs: 24510 / % possible obs: 94 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 16.5 Å2
Reflection shellResolution: 2.3→2.38 Å / % possible all: 78

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS1refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB Entry 1FTL

1ftl


Resolution: 2.3→19.96 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 1281596 / Data cutoff high rms absF: 1281596 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.268 2389 9.9 %RANDOM
Rwork0.22 ---
all-24109 --
obs-24109 92.7 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 18.2783 Å2 / ksol: 0.352512 e/Å3
Displacement parametersBiso mean: 16.3 Å2
Baniso -1Baniso -2Baniso -3
1--3.49 Å20 Å20 Å2
2--3.37 Å20 Å2
3---0.12 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.36 Å0.28 Å
Luzzati d res low-5 Å
Luzzati sigma a0.31 Å0.18 Å
Refinement stepCycle: LAST / Resolution: 2.3→19.96 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3984 0 41 183 4208
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_dihedral_angle_d22.1
X-RAY DIFFRACTIONc_improper_angle_d0.76
LS refinement shellResolution: 2.3→2.44 Å / Rfactor Rfree error: 0.017 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.32 357 10.3 %
Rwork0.231 3122 -
obs--81.8 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMWATER.TOP
X-RAY DIFFRACTION3NQX.PARAMDNQX.TOP
X-RAY DIFFRACTION4ION.PARAMION.TOP

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