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- PDB-5njy: X-ray structure of the H235Q mutant of GLIC -

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Basic information

Entry
Database: PDB / ID: 5njy
TitleX-ray structure of the H235Q mutant of GLIC
ComponentsProton-gated ion channel
KeywordsTRANSPORT PROTEIN / MEMBRANE PROTEIN
Function / homology
Function and homology information


sodium channel activity / extracellular ligand-gated monoatomic ion channel activity / potassium channel activity / transmembrane transporter complex / regulation of membrane potential / transmembrane signaling receptor activity / neuron projection / signal transduction / identical protein binding / plasma membrane
Similarity search - Function
Neurotransmitter-gated ion-channel transmembrane domain / Acetylcholine Binding Protein; Chain: A, / Neurotransmitter-gated ion-channel ligand-binding domain / Gamma-aminobutyric acid A receptor/Glycine receptor alpha / Neurotransmitter-gated ion-channel transmembrane domain superfamily / Neuronal acetylcholine receptor / Neurotransmitter-gated ion-channel / Neurotransmitter-gated ion-channel ligand-binding domain / Neurotransmitter-gated ion-channel ligand-binding domain superfamily / Neurotransmitter-gated ion-channel ligand binding domain ...Neurotransmitter-gated ion-channel transmembrane domain / Acetylcholine Binding Protein; Chain: A, / Neurotransmitter-gated ion-channel ligand-binding domain / Gamma-aminobutyric acid A receptor/Glycine receptor alpha / Neurotransmitter-gated ion-channel transmembrane domain superfamily / Neuronal acetylcholine receptor / Neurotransmitter-gated ion-channel / Neurotransmitter-gated ion-channel ligand-binding domain / Neurotransmitter-gated ion-channel ligand-binding domain superfamily / Neurotransmitter-gated ion-channel ligand binding domain / Methane Monooxygenase Hydroxylase; Chain G, domain 1 / Distorted Sandwich / Up-down Bundle / Mainly Beta / Mainly Alpha
Similarity search - Domain/homology
Proton-gated ion channel
Similarity search - Component
Biological speciesGloeobacter violaceus PCC 7421 (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.95 Å
AuthorsHu, H. / Fourati, Z. / Delarue, M.
CitationJournal: To Be Published
Title: X-ray structure of the H235Q mutant of GLIC
Authors: Fourati, Z. / Delarue, M.
History
DepositionMar 30, 2017Deposition site: PDBE / Processing site: PDBE
Revision 1.0May 16, 2018Provider: repository / Type: Initial release
Revision 1.1Oct 16, 2019Group: Data collection / Category: reflns_shell
Revision 1.2May 8, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Proton-gated ion channel
B: Proton-gated ion channel
C: Proton-gated ion channel
D: Proton-gated ion channel
E: Proton-gated ion channel


Theoretical massNumber of molelcules
Total (without water)187,0445
Polymers187,0445
Non-polymers00
Water23413
1


  • Idetical with deposited unit
  • defined by software
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area21520 Å2
ΔGint-155 kcal/mol
Surface area63940 Å2
MethodPISA
Unit cell
Length a, b, c (Å)182.925, 134.239, 160.628
Angle α, β, γ (deg.)90.00, 102.37, 90.00
Int Tables number5
Space group name H-MC121

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Components

#1: Protein
Proton-gated ion channel / GLIC / Ligand-gated ion channel / LGIC


Mass: 37408.879 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Gloeobacter violaceus PCC 7421 (bacteria)
Gene: glvI, glr4197 / Production host: Escherichia coli (E. coli) / References: UniProt: Q7NDN8
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 13 / 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: 5.15 Å3/Da / Density % sol: 76.11 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop
Details: 400 mM NaSCN 100 mM Na Acetate pH 4 12-15% PEG4000 2% DMSO 16% Glycerol

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Data collection

DiffractionMean temperature: 80 K
Diffraction sourceSource: SYNCHROTRON / Site: SOLEIL / Beamline: PROXIMA 1 / Wavelength: 0.97 Å
DetectorType: DECTRIS PILATUS3 S 6M / Detector: PIXEL / Date: May 18, 2016
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97 Å / Relative weight: 1
ReflectionResolution: 2.95→50 Å / Num. obs: 77705 / % possible obs: 97 % / Redundancy: 2.8 % / Biso Wilson estimate: 62.74 Å2 / Net I/σ(I): 8.9

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Processing

Software
NameVersionClassification
BUSTER2.10.2refinement
XDSdata reduction
Aimlessdata scaling
REFMACphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.95→20 Å / Cor.coef. Fo:Fc: 0.9325 / Cor.coef. Fo:Fc free: 0.9179 / SU R Cruickshank DPI: 0.453 / Cross valid method: THROUGHOUT / σ(F): 0 / SU R Blow DPI: 0.407 / SU Rfree Blow DPI: 0.276 / SU Rfree Cruickshank DPI: 0.291
RfactorNum. reflection% reflectionSelection details
Rfree0.2429 3890 5.01 %RANDOM
Rwork0.2244 ---
obs0.2253 77706 97.63 %-
Displacement parametersBiso mean: 149.88 Å2
Baniso -1Baniso -2Baniso -3
1--2.9354 Å20 Å214.0656 Å2
2---9.6001 Å20 Å2
3---12.5355 Å2
Refine analyzeLuzzati coordinate error obs: 0.812 Å
Refinement stepCycle: 1 / Resolution: 2.95→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms12590 0 0 13 12603
Refine LS restraints
Refine-IDTypeDev idealNumberRestraint functionWeight
X-RAY DIFFRACTIONt_bond_d0.0112920HARMONIC2
X-RAY DIFFRACTIONt_angle_deg1.0917665HARMONIC2
X-RAY DIFFRACTIONt_dihedral_angle_d4290SINUSOIDAL2
X-RAY DIFFRACTIONt_incorr_chiral_ct
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_trig_c_planes265HARMONIC2
X-RAY DIFFRACTIONt_gen_planes1860HARMONIC5
X-RAY DIFFRACTIONt_it12920HARMONIC20
X-RAY DIFFRACTIONt_nbd
X-RAY DIFFRACTIONt_omega_torsion2.63
X-RAY DIFFRACTIONt_other_torsion18.96
X-RAY DIFFRACTIONt_improper_torsion
X-RAY DIFFRACTIONt_chiral_improper_torsion1760SEMIHARMONIC5
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_contact14674SEMIHARMONIC4
LS refinement shellResolution: 2.95→3.03 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.2679 280 4.87 %
Rwork0.2552 5474 -
all0.2558 5754 -
obs--98.1 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
14.3988-0.68345.21373.4292-1.23849.5870.03370.17850.2223-0.26420.03330.2402-0.234-0.1272-0.067-0.15260.0888-0.2677-0.21210.0528-0.44335.2671-8.0838186.9515
24.76930.50114.92413.13460.58816.59250.142-0.0955-0.1943-0.22730.03690.4180.1307-0.6062-0.1789-0.27270.0324-0.3250.09630.0372-0.3147-5.8306-29.9598192.5214
33.5930.94745.04764.05891.91649.50220.1593-0.0005-0.5048-0.32040.03030.15670.187-0.1225-0.1897-0.37190.1236-0.3777-0.176-0.1774-0.18528.924-48.787185.1542
41.9727-0.1853.98252.92050.44512.50460.11490.3169-0.3054-0.4891-0.1391-0.256-0.07240.2830.0242-0.3310.1563-0.30980.2108-0.2769-0.439129.471-38.8197174.564
52.0285-0.47284.21183.3479-1.799511.4307-0.12450.40.1084-0.57290.1075-0.151-0.22510.53390.017-0.1047-0.1171-0.2320.23610.0443-0.550327.1795-13.6383175.6698
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1{ A|* }
2X-RAY DIFFRACTION2{ B|* }
3X-RAY DIFFRACTION3{ C|* }
4X-RAY DIFFRACTION4{ D|* }
5X-RAY DIFFRACTION5{ E|* }

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