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- PDB-4f12: Crystal structure of the extracellular domain of human GABA(B) re... -

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Basic information

Entry
Database: PDB / ID: 4f12
TitleCrystal structure of the extracellular domain of human GABA(B) receptor GBR2
ComponentsGamma-aminobutyric acid type B receptor subunit 2
KeywordsSIGNALING PROTEIN / Venus flytrap module / G-protein coupled receptor
Function / homology
Function and homology information


GABA B receptor activation / G protein-coupled GABA receptor complex / neuron-glial cell signaling / G protein-coupled GABA receptor activity / G protein-coupled receptor heterodimeric complex / GABA receptor complex / negative regulation of adenylate cyclase activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / gamma-aminobutyric acid signaling pathway / synaptic transmission, GABAergic ...GABA B receptor activation / G protein-coupled GABA receptor complex / neuron-glial cell signaling / G protein-coupled GABA receptor activity / G protein-coupled receptor heterodimeric complex / GABA receptor complex / negative regulation of adenylate cyclase activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / gamma-aminobutyric acid signaling pathway / synaptic transmission, GABAergic / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / transmembrane signaling receptor activity / G alpha (i) signalling events / chemical synaptic transmission / postsynaptic membrane / neuron projection / G protein-coupled receptor signaling pathway / protein heterodimerization activity / plasma membrane / cytoplasm
Similarity search - Function
GPCR family 3, gamma-aminobutyric acid receptor, type B2 / Gamma-aminobutyric acid type B receptor subunit 2, coiled-coil domain / Gamma-aminobutyric acid type B receptor subunit 2 coiled-coil domain / GPCR family 3, GABA-B receptor / GPCR, family 3, conserved site / G-protein coupled receptors family 3 signature 3. / GPCR, family 3 / GPCR family 3, C-terminal / 7 transmembrane sweet-taste receptor of 3 GCPR / G-protein coupled receptors family 3 profile. ...GPCR family 3, gamma-aminobutyric acid receptor, type B2 / Gamma-aminobutyric acid type B receptor subunit 2, coiled-coil domain / Gamma-aminobutyric acid type B receptor subunit 2 coiled-coil domain / GPCR family 3, GABA-B receptor / GPCR, family 3, conserved site / G-protein coupled receptors family 3 signature 3. / GPCR, family 3 / GPCR family 3, C-terminal / 7 transmembrane sweet-taste receptor of 3 GCPR / G-protein coupled receptors family 3 profile. / Response regulator / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Gamma-aminobutyric acid type B receptor subunit 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 3.02 Å
AuthorsGeng, Y. / Xiong, D. / Mosyak, L. / Malito, D.L. / Kniazeff, J. / Chen, Y. / Burmakina, S. / Quick, M. / Bush, M. / Javitch, J.A. ...Geng, Y. / Xiong, D. / Mosyak, L. / Malito, D.L. / Kniazeff, J. / Chen, Y. / Burmakina, S. / Quick, M. / Bush, M. / Javitch, J.A. / Pin, J.-P. / Fan, Q.R.
CitationJournal: Nat.Neurosci. / Year: 2012
Title: Structure and functional interaction of the extracellular domain of human GABA(B) receptor GBR2.
Authors: Geng, Y. / Xiong, D. / Mosyak, L. / Malito, D.L. / Kniazeff, J. / Chen, Y. / Burmakina, S. / Quick, M. / Bush, M. / Javitch, J.A. / Pin, J.P. / Fan, Q.R.
History
DepositionMay 5, 2012Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 6, 2012Provider: repository / Type: Initial release
Revision 1.1Aug 15, 2012Group: Database references
Revision 1.2Nov 15, 2017Group: Refinement description / Category: software
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Database references / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / struct_asym / struct_conn / struct_ref_seq_dif / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.type / _pdbx_struct_assembly_gen.asym_id_list / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_comp_id / _struct_ref_seq_dif.details
Description: Carbohydrate remediation / Provider: repository / Type: Remediation

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Gamma-aminobutyric acid type B receptor subunit 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)50,3625
Polymers49,1271
Non-polymers1,2344
Water1,72996
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)82.684, 142.515, 79.264
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number20
Space group name H-MC2221

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Components

#1: Protein Gamma-aminobutyric acid type B receptor subunit 2 / GABA-B receptor 2 / GABA-B-R2 / GABA-BR2 / GABABR2 / Gb2 / G-protein coupled receptor 51 / HG20


Mass: 49127.492 Da / Num. of mol.: 1 / Fragment: extracellular domain, UNP residues 42-466'
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GABBR2, GPR51, GPRC3B / Production host: Spodoptera frugiperda (fall armyworm) / Strain (production host): sf9 / References: UniProt: O75899
#2: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 570.542 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-1-2/a4-b1_a6-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}[(6+1)][a-L-Fucp]{}}}LINUCSPDB-CARE
#3: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 96 / 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: 2.38 Å3/Da / Density % sol: 48.24 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 7
Details: 30% Jeffamine ED-2001, 0.1M HEPES, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X4C / Wavelength: 0.979 Å
DetectorType: MAR CCD 165 mm / Detector: CCD / Date: Feb 10, 2008
RadiationMonochromator: Si 111 channel / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.979 Å / Relative weight: 1
ReflectionResolution: 3→50 Å / Num. all: 8073 / Num. obs: 8073 / % possible obs: 86.1 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.8 % / Rmerge(I) obs: 0.087 / Χ2: 0.988 / Net I/σ(I): 11.6
Reflection shell
Resolution (Å)Redundancy (%)Rmerge(I) obsNum. unique allΧ2Diffraction-ID% possible all
3-3.112.50.495880.979165.4
3.11-3.2330.3787151.021176.7
3.23-3.383.30.2577750.908185.3
3.38-3.563.50.1848240.893188.4
3.56-3.783.70.1388301.016189
3.78-4.073.60.1098220.938189.3
4.07-4.483.70.0868271.133188.7
4.48-5.1340.0728741.005192
5.13-6.464.90.0668880.944193.4
6.46-504.80.0379301.025191.2

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Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
REFMAC5.4.0066refinement
PDB_EXTRACT3.11data extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
RefinementResolution: 3.02→39.63 Å / Cor.coef. Fo:Fc: 0.8966 / Cor.coef. Fo:Fc free: 0.8913 / Occupancy max: 1 / Occupancy min: 1 / Cross valid method: THROUGHOUT / σ(F): 0 / SU Rfree Blow DPI: 0.527
RfactorNum. reflection% reflectionSelection details
Rfree0.2537 380 4.72 %RANDOM
Rwork0.2073 ---
obs0.2094 8056 84.72 %-
Displacement parametersBiso max: 135.84 Å2 / Biso mean: 62.016 Å2 / Biso min: 4.49 Å2
Baniso -1Baniso -2Baniso -3
1--9.4071 Å20 Å20 Å2
2---3.4674 Å20 Å2
3---12.8746 Å2
Refine analyzeLuzzati coordinate error obs: 0.53 Å
Refinement stepCycle: LAST / Resolution: 3.02→39.63 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3270 0 80 96 3446
Refine LS restraints
Refine-IDTypeNumberRestraint functionWeightDev ideal
X-RAY DIFFRACTIONt_dihedral_angle_d1160SINUSOIDAL2
X-RAY DIFFRACTIONt_trig_c_planes92HARMONIC2
X-RAY DIFFRACTIONt_gen_planes497HARMONIC5
X-RAY DIFFRACTIONt_it3437HARMONIC20
X-RAY DIFFRACTIONt_nbd
X-RAY DIFFRACTIONt_improper_torsion
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_chiral_improper_torsion457SEMIHARMONIC5
X-RAY DIFFRACTIONt_sum_occupancies
X-RAY DIFFRACTIONt_utility_distance
X-RAY DIFFRACTIONt_utility_angle
X-RAY DIFFRACTIONt_utility_torsion
X-RAY DIFFRACTIONt_ideal_dist_contact3839SEMIHARMONIC4
X-RAY DIFFRACTIONt_bond_d3437HARMONIC20.008
X-RAY DIFFRACTIONt_angle_deg4668HARMONIC21.08
X-RAY DIFFRACTIONt_omega_torsion2.54
X-RAY DIFFRACTIONt_other_torsion16.86
LS refinement shellResolution: 3.02→3.38 Å / Total num. of bins used: 5
RfactorNum. reflection% reflection
Rfree0.323 97 5.16 %
Rwork0.256 1782 -
all0.2595 1879 -
obs--84.72 %
Refinement TLS params.Method: refined / Origin x: 18.855 Å / Origin y: 35.6624 Å / Origin z: -4.0002 Å
111213212223313233
T0.0282 Å20.0239 Å20.0272 Å2-0.1053 Å2-0.0251 Å2---0.073 Å2
L0.4365 °20.3045 °20.0165 °2-1.856 °2-0.3101 °2--0.4101 °2
S-0.0535 Å °-0.0702 Å °-0.023 Å °-0.0613 Å °0.0056 Å °-0.0187 Å °0.0063 Å °-0.0415 Å °0.0479 Å °

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