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- PDB-1m5e: X-RAY STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPL... -

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Basic information

Entry
Database: PDB / ID: 1m5e
TitleX-RAY STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH ACPA AT 1.46 A RESOLUTION
ComponentsGlutamate receptor 2GRIA2
KeywordsMEMBRANE PROTEIN / Ionotropic glutamate receptor / GluR2 / ligand binding core / agonist complex.
Function / homology
Function and homology information


spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / response to lithium ion / perisynaptic space / cellular response to glycine / AMPA glutamate receptor activity / Trafficking of GluR2-containing AMPA receptors / immunoglobulin binding ...spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / response to lithium ion / perisynaptic space / cellular response to glycine / AMPA glutamate receptor activity / Trafficking of GluR2-containing AMPA receptors / immunoglobulin binding / AMPA glutamate receptor complex / kainate selective glutamate receptor activity / ionotropic glutamate receptor complex / extracellularly glutamate-gated ion channel activity / 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 / cellular response to brain-derived neurotrophic factor stimulus / somatodendritic compartment / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor binding / ionotropic glutamate receptor signaling pathway / dendrite cytoplasm / cytoskeletal protein binding / SNARE binding / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / dendritic shaft / synaptic membrane / synaptic transmission, glutamatergic / PDZ domain binding / postsynaptic density membrane / protein tetramerization / modulation of chemical synaptic transmission / Schaffer collateral - CA1 synapse / establishment of protein localization / terminal bouton / receptor internalization / synaptic vesicle membrane / cerebral cortex development / synaptic vesicle / presynapse / signaling receptor activity / presynaptic membrane / amyloid-beta binding / growth cone / perikaryon / chemical synaptic transmission / scaffold protein binding / postsynaptic membrane / dendritic spine / postsynaptic density / neuron projection / axon / neuronal cell body / dendrite / synapse / glutamatergic synapse / protein-containing complex binding / endoplasmic reticulum membrane / protein kinase binding / cell surface / endoplasmic reticulum / protein-containing complex / membrane / identical protein binding / 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
ACETATE ION / Chem-AM1 / Glutamate receptor 2
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Difference Fourier / Resolution: 1.46 Å
AuthorsHogner, A. / Kastrup, J.S. / Jin, R. / Liljefors, T. / Mayer, M.L. / Egebjerg, J. / Larsen, I.K. / Gouaux, E.
Citation
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.K. / Gouaux, E.
#1: 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.
#2: Journal: Nature / Year: 2002
Title: Mechanism of glutamate receptor desensitization.
Authors: Sun, Y. / Olson, R. / Horning, M. / Armstrong, N. / Mayer, M. / Gouaux, E.
#3: 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, Y. / Jin, R. / Gouaux, E.
History
DepositionJul 9, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 18, 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
Remark 999Sequence Native GluR2 is a membrane protein. The protein crystallized is the extracellular ligand ...Sequence Native GluR2 is a membrane protein. The protein crystallized is the extracellular ligand binding domain of GluR2. Transmembrane regions were genetically removed and replaced with a GLY-THR linker (residues 118 and 119). Therefore, the sequence matches discontinuously with the reference database (413-527, 653-796). Residues GLY1 and ALA2 are cloning artifacts.

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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
hetero molecules


Theoretical massNumber of molelcules
Total (without water)88,89015
Polymers87,6653
Non-polymers1,22512
Water17,637979
1
A: Glutamate receptor 2
C: Glutamate receptor 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)59,1338
Polymers58,4432
Non-polymers6906
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3280 Å2
ΔGint-77 kcal/mol
Surface area22580 Å2
MethodPISA
2
B: Glutamate receptor 2
hetero molecules

B: Glutamate receptor 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)59,51314
Polymers58,4432
Non-polymers1,07012
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_665-x+1,-y+1,z1
3
C: Glutamate receptor 2
hetero molecules

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


Theoretical massNumber of molelcules
Total (without water)88,89015
Polymers87,6653
Non-polymers1,22512
Water543
TypeNameSymmetry operationNumber
crystal symmetry operation4_557x+1/2,-y+1/2,-z+21
identity operation1_555x,y,z1
Buried area4390 Å2
ΔGint-276 kcal/mol
Surface area34960 Å2
MethodPISA
Unit cell
Length a, b, c (Å)114.045, 163.156, 46.773
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number18
Space group name H-MP21212
Components on special symmetry positions
IDModelComponents
11B-2097-

HOH

DetailsThe biological assembly is a dimer. Chain A and chain C of the asymmetric unit form a non-crystallographic dimer. The dimer of chain B can be generated by the two fold axis: -x, -y, z.

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Components

#1: Protein Glutamate receptor 2 / GRIA2 / GLUR-2 / GLUR-B / GLUR-K2 / GLUTAMATE RECEPTOR IONOTROPIC AMPA 2


Mass: 29221.682 Da / Num. of mol.: 3 / Fragment: GluR2-flop ligand binding core (S1S2J)
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: GluR-2 / 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-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-AM1 / (S)-2-AMINO-3-(3-CARBOXY-5-METHYLISOXAZOL-4-YL)PROPIONIC ACID / ACPA


Mass: 214.175 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C8H10N2O5
#4: Chemical ChemComp-ACT / ACETATE ION / Acetate


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


Mass: 18.015 Da / Num. of mol.: 979 / 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: 2.49 Å3/Da / Density % sol: 0.506 %
Crystal growTemperature: 279 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: PEG 8000, Zn(OAc)2, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 279K
Crystal grow
*PLUS
Temperature: 4 ℃ / pH: 7
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
110 mg/mlprotein1drop
210 mMHEPES1droppH7.0
320 mM1dropNaCl
41 mMEDTA1drop
53 mM(S)-ACPA1drop
612-18 %(w/v)PEG80001reservoir
70.15-0.28 Mzinc acetate1reservoir
80.1 Msodium cacodylate1reservoirpH6.5

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Data collection

DiffractionMean temperature: 110 K
Diffraction sourceSource: SYNCHROTRON / Site: EMBL/DESY, Hamburg / Beamline: BW7B / Wavelength: 0.842 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Aug 12, 2000
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.842 Å / Relative weight: 1
ReflectionResolution: 1.46→20 Å / Num. all: 148394 / Num. obs: 148394 / % possible obs: 97.4 % / Observed criterion σ(I): -3 / Redundancy: 4.2 % / Biso Wilson estimate: 16.1 Å2 / Rmerge(I) obs: 0.045 / Net I/σ(I): 20.8
Reflection shellResolution: 1.46→1.49 Å / Rmerge(I) obs: 0.416 / Mean I/σ(I) obs: 2.5 / Num. unique all: 7526 / % possible all: 93.9
Reflection
*PLUS
Lowest resolution: 20 Å
Reflection shell
*PLUS
% possible obs: 93.9 %

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
CNS1refinement
CNS1phasing
RefinementMethod to determine structure: Difference Fourier
Starting model: PDB entry 1M5B (S1S2J:2-Me-Tet-AMPA, molecule A).

1m5b


Resolution: 1.46→16.75 Å / Rfactor Rfree error: 0.003 / Data cutoff high absF: 2045331 / Data cutoff high rms absF: 2045331 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
Details: Residues 1-3 and 262-263 were not located in the electron density map. The side chains of the following residues are not fully defined: LYS A21, LYS A45, LYS A50, ASP A67, THR A131, LYS ...Details: Residues 1-3 and 262-263 were not located in the electron density map. The side chains of the following residues are not fully defined: LYS A21, LYS A45, LYS A50, ASP A67, THR A131, LYS A151, GLU B27, ASP B67, GLU B132, LYS B151, LYS C21, GLU C24, GLU C27, ARG C64, GLU C122, THR C131, GLU C132, ARG C172, LYS C185
RfactorNum. reflection% reflectionSelection details
Rfree0.216 7377 0.05 %Random.
Rwork0.202 ---
all-148230 --
obs-148230 97.3 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 54.062 Å2 / ksol: 0.437671 e/Å3
Displacement parametersBiso mean: 20.3 Å2
Baniso -1Baniso -2Baniso -3
1-0.43 Å21.88 Å2-2.31 Å2
2--0 Å20 Å2
3---0 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.18 Å0.16 Å
Luzzati d res low-5 Å
Luzzati sigma a0.13 Å0.12 Å
Refinement stepCycle: LAST / Resolution: 1.46→16.75 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6146 0 57 979 7182
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_dihedral_angle_d21.5
X-RAY DIFFRACTIONc_improper_angle_d0.76
X-RAY DIFFRACTIONc_mcbond_it1.091.5
X-RAY DIFFRACTIONc_mcangle_it1.712
X-RAY DIFFRACTIONc_scbond_it1.972
X-RAY DIFFRACTIONc_scangle_it2.982.5
LS refinement shellResolution: 1.46→1.55 Å / Rfactor Rfree error: 0.008 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.26 1175 0.049 %
Rwork0.247 22960 -
obs-24135 96.4 %
Xplor fileSerial no: 1 / Param file: PROTEIN_REP.PARAM / Topol file: PROTEIN.TOP
Refinement
*PLUS
Lowest resolution: 20 Å / % reflection Rfree: 5 %
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
LS refinement shell
*PLUS
Rfactor Rfree: 0.26

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