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- PDB-1n0t: X-ray structure of the GluR2 ligand-binding core (S1S2J) in compl... -

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Basic information

Entry
Database: PDB / ID: 1n0t
TitleX-ray structure of the GluR2 ligand-binding core (S1S2J) in complex with the antagonist (S)-ATPO at 2.1 A resolution.
ComponentsGlutamate receptor 2
KeywordsMEMBRANE PROTEIN / Ionotropic glutamate receptor GluR2 / ligand-binding core / antagonist complex
Function / homology
Function and homology information


spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / perisynaptic space / AMPA glutamate receptor activity / ligand-gated monoatomic cation channel activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / immunoglobulin binding ...spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / perisynaptic space / AMPA glutamate receptor activity / ligand-gated monoatomic cation channel 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 / cellular response to glycine / extracellularly glutamate-gated ion channel activity / asymmetric synapse / regulation of receptor recycling / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission / glutamate receptor binding / glutamate-gated receptor activity / regulation of synaptic transmission, glutamatergic / response to fungicide / cytoskeletal protein binding / ionotropic glutamate receptor binding / presynaptic active zone membrane / extracellular ligand-gated monoatomic ion channel activity / somatodendritic compartment / glutamate-gated calcium ion channel activity / cellular response to brain-derived neurotrophic factor stimulus / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite membrane / dendrite cytoplasm / ionotropic glutamate receptor signaling pathway / SNARE binding / dendritic shaft / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / PDZ domain binding / protein tetramerization / establishment of protein localization / synaptic membrane / modulation of chemical synaptic transmission / postsynaptic density membrane / terminal bouton / Schaffer collateral - CA1 synapse / cerebral cortex development / receptor internalization / synaptic vesicle membrane / synaptic vesicle / presynapse / signaling receptor activity / amyloid-beta binding / presynaptic membrane / growth cone / scaffold protein binding / chemical synaptic transmission / dendritic spine / perikaryon / postsynaptic membrane / neuron projection / postsynaptic density / axon / neuronal cell body / synapse / dendrite / protein-containing complex binding / protein kinase binding / glutamatergic synapse / cell surface / endoplasmic reticulum / protein-containing complex / identical protein binding / membrane / plasma membrane
Similarity search - Function
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 ...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 II / Periplasmic binding protein-like I / D-Maltodextrin-Binding Protein; domain 2 / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
ACETATE ION / Chem-AT1 / Glutamate receptor 2
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.1 Å
AuthorsHogner, A. / Greenwood, J.R. / Liljefors, T. / Lunn, M.-L. / Egebjerg, J. / Larsen, I.K. / Gouaux, E. / Kastrup, J.S.
Citation
Journal: J.Med.Chem. / Year: 2003
Title: Competitive antagonism of AMPA receptors by ligands of different classes: crystal structure of ATPO bound to the GluR2 ligand-binding core, in comparison with DNQX.
Authors: Hogner, A. / Greenwood, J.R. / Liljefors, T. / Lunn, M.L. / Egebjerg, J. / Larsen, I.K. / Gouaux, E. / Kastrup, J.S.
#1: Journal: J.Mol.Biol. / Year: 2002
Title: Structural basis for AMPA receptor activation and ligand selectivity: Crystal structures of five agonist complexes with the GluR2 ligand binding core.
Authors: Hogner, A. / Kastrup, J.S. / Jin, R. / Liljefors, T. / Mayer, M.L. / Egebjerg, J. / Larsen, I. / Gouaux, E.
#2: Journal: Neuron / Year: 2000
Title: Mechanisms for activation and antagonism of an AMPA-sensitive glutamate receptor: Crystal structures of the GluR2 ligand binding core.
Authors: Armstrong, N. / Gouaux, E.
#3: Journal: Nature / Year: 2002
Title: Mechanism of glutamate receptor desensitization.
Authors: Sun, Y. / Olson, R. / Horning, M. / Armstrong, N. / Mayer, M. / Gouaux, E.
#4: Journal: Protein Sci. / Year: 1998
Title: Probing the ligand binding domain of the GluR2 receptor by proteolysis and deletion mutagenesis defines domain boundaries and yields a crystallizable construct.
Authors: Chen, G.Q. / Sun, R. / Jin, R. / Gouaux, E.
History
DepositionOct 15, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 4, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Dec 21, 2011Group: Database references
Revision 1.4Aug 16, 2017Group: Refinement description / Source and taxonomy / Category: entity_src_gen / software
Revision 1.5Oct 30, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature / 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
Remark 999Native GluR2 is a membrane protein. The protein crystallized is the extracellular ligand-binding ...Native GluR2 is a membrane protein. The protein crystallized is the extracellular ligand-binding core of GluR2. Transmembrane regions were genetically removed and replaced with a Gly-Thr linker (residues 118-119). Therefore, the sequence matches discontinuously with the reference database (413-527, 653-796). The two first residues (Gly, Ala) are cloning artifacts and were not located in the electron density map.

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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
C: Glutamate receptor 2
D: Glutamate receptor 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)118,61913
Polymers116,8874
Non-polymers1,7329
Water17,096949
1
A: Glutamate receptor 2
C: Glutamate receptor 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)59,2806
Polymers58,4432
Non-polymers8374
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Glutamate receptor 2
D: Glutamate receptor 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)59,3397
Polymers58,4432
Non-polymers8965
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)65.970, 89.060, 194.860
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
DetailsThe biological assembly is a tetramer composed of dimers-of-dimers. In the crystal, only the dimer is observed. The biological dimer can be generated as follows: A, C: 1.00000 0.00000 0.00000 0.00000 1.00000 0.00000 0.00000 0.00000 1.00000 0.00000 0.00000 0.00000 -1.00000 0.00000 0.00000 0.00000 -1.00000 0.00000 0.00000 0.00000 1.00000 0.50000 0.00000 -0.50000 B, D: 1.00000 0.00000 0.00000 0.00000 1.00000 0.00000 0.00000 0.00000 1.00000 0.00000 0.00000 0.00000 -1.00000 0.00000 0.00000 0.00000 -1.00000 0.00000 0.00000 0.00000 1.00000 0.50000 0.00000 -0.50000

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Components

#1: Protein
Glutamate receptor 2 / GluR-2 / GluR-B / Glutamate receptor ionotropic / AMPA 2


Mass: 29221.682 Da / Num. of mol.: 4 / Fragment: GluR2-flop ligand-binding core (S1S2J).
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Rat / Plasmid: pET30B / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P19491
#2: Chemical
ChemComp-AT1 / (S)-2-AMINO-3-(5-TERT-BUTYL-3-(PHOSPHONOMETHOXY)-4-ISOXAZOLYL)PROPIONIC ACID


Mass: 322.252 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C11H19N2O7P
#3: Chemical
ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: SO4
#4: Chemical ChemComp-ACT / ACETATE ION


Mass: 59.044 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C2H3O2
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 949 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 2.5 Å3/Da / Density % sol: 50 %
Crystal growTemperature: 279 K / Method: vapor diffusion, hanging drop / pH: 5.2
Details: PEG 3350, AMMONIUM SULFATE, SODIUM ACETATE pH 5.2, VAPOR DIFFUSION, HANGING DROP, temperature 279K
Crystal grow
*PLUS
Temperature: 6 ℃ / pH: 7
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
110 mg/mlprotein1drop
210 mMHEPES1droppH7.0
320 mM1dropNaCl
41 mMEDTA1drop
520 %PEG33501reservoir
60.2 Mammonium sulfate1reservoir
70.1 Msodium acetate1reservoirpH5.2

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Data collection

DiffractionMean temperature: 110 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID14-1 / Wavelength: 0.934 Å
DetectorType: MARRESEARCH / Detector: CCD / Date: Mar 31, 2001
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.934 Å / Relative weight: 1
ReflectionResolution: 2.1→20 Å / Num. all: 66583 / Num. obs: 66583 / % possible obs: 99.1 % / Observed criterion σ(I): 0 / Redundancy: 7.4 % / Biso Wilson estimate: 30.8 Å2 / Rmerge(I) obs: 0.098 / Net I/σ(I): 20.2
Reflection shellResolution: 2.1→2.17 Å / Redundancy: 59.5 % / Rmerge(I) obs: 0.595 / Mean I/σ(I) obs: 3.4 / Num. unique all: 6551 / % possible all: 98.6
Reflection
*PLUS
Lowest resolution: 20 Å / Num. measured all: 490208
Reflection shell
*PLUS
% possible obs: 98.6 %

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS1refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ID CODE 1FTL, molecule A.

1ftl


Resolution: 2.1→20 Å / Rfactor Rfree error: 0.004 / Data cutoff high rms absF: 2718199.32 / Isotropic thermal model: RESTRAINED. / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
Details: RESIDUES 1-4 AND 262-263 WERE NOT LOCATED IN THE ELECTRON DENSITY MAP. THE SIDE CHAINS OF THE FOLLOWING RESIDUES ARE NOT FULLY DEFINED: LYS A21, MET A25, LYS A69, ARG A149, ARG A163, LYS ...Details: RESIDUES 1-4 AND 262-263 WERE NOT LOCATED IN THE ELECTRON DENSITY MAP. THE SIDE CHAINS OF THE FOLLOWING RESIDUES ARE NOT FULLY DEFINED: LYS A21, MET A25, LYS A69, ARG A149, ARG A163, LYS A204, LYS B21, MET B25, LYS B45, ASP B67, LYS B69, ASP B139, ARG B149, LYS B151, ARG B172, LYS C21, GLU C24, LYS C151, LYS D21, GLU D24, LYS D50, ARG D149, LYS D151, ARG D172, LYS D183.
RfactorNum. reflection% reflectionSelection details
Rfree0.245 3358 5 %RANDOM.
Rwork0.194 ---
all-66535 --
obs-66535 98.7 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 61.72 Å2 / ksol: 0.396 e/Å3
Displacement parametersBiso mean: 29.9 Å2
Baniso -1Baniso -2Baniso -3
1-5.95 Å2-3.5 Å2-2.44 Å2
2--0 Å20 Å2
3---0 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.3 Å0.23 Å
Luzzati d res low-5 Å
Luzzati sigma a0.27 Å0.2 Å
Refinement stepCycle: LAST / Resolution: 2.1→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms8036 0 108 949 9093
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_dihedral_angle_d21.5
X-RAY DIFFRACTIONc_improper_angle_d0.76
X-RAY DIFFRACTIONc_mcbond_it1.361.5
X-RAY DIFFRACTIONc_mcangle_it2.12
X-RAY DIFFRACTIONc_scbond_it2.332
X-RAY DIFFRACTIONc_scangle_it3.382.5
LS refinement shellResolution: 2.1→2.23 Å / Rfactor Rfree error: 0.014 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.312 506 4.9 %
Rwork0.239 9764 -
obs-9764 92.1 %
Xplor fileSerial no: 1 / Param file: PROTEIN_REP.PARAM / Topol file: PROTEIN.TOP
Refinement
*PLUS
Lowest resolution: 20 Å
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg21.5
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.76

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