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- PDB-3wto: Crystal Structure of Lymnaea stagnalis Acetylcholine-Binding Prot... -

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Basic information

Entry
Database: PDB / ID: 3wto
TitleCrystal Structure of Lymnaea stagnalis Acetylcholine-Binding Protein Q55R Mutant Complexed with Desnitro-imidacloprid
ComponentsAcetylcholine-binding protein
KeywordsSIGNALING PROTEIN / neonicotinoids / nicotinic acetylcholine receptor / imidacloprid / acetylcholine binding
Function / homology
Function and homology information


excitatory extracellular ligand-gated monoatomic ion channel activity / synaptic cleft / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / transmembrane signaling receptor activity / postsynapse / neuron projection / membrane
Similarity search - Function
Acetylcholine Binding Protein; Chain: A, / Neurotransmitter-gated ion-channel ligand-binding domain / 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 / Distorted Sandwich / Ig-like domain profile. / Immunoglobulin-like domain / Mainly Beta
Similarity search - Domain/homology
Chem-N2Y / Acetylcholine-binding protein
Similarity search - Component
Biological speciesLymnaea stagnalis (great pond snail)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.25 Å
AuthorsOkajima, T. / Ihara, M. / Yamashita, A. / Oda, T. / Matsuda, K.
CitationJournal: Mol.Pharmacol. / Year: 2014
Title: Studies on an acetylcholine binding protein identify a basic residue in loop G on the beta 1 strand as a new structural determinant of neonicotinoid actions
Authors: Ihara, M. / Okajima, T. / Yamashita, A. / Oda, T. / Asano, T. / Matsui, M. / Sattelle, D.B. / Matsuda, K.
History
DepositionApr 11, 2014Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Feb 4, 2015Provider: repository / Type: Initial release
Revision 1.1Nov 8, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / 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 1.2Oct 30, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Acetylcholine-binding protein
B: Acetylcholine-binding protein
C: Acetylcholine-binding protein
D: Acetylcholine-binding protein
E: Acetylcholine-binding protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)122,30810
Polymers121,2545
Non-polymers1,0535
Water8,287460
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area13940 Å2
ΔGint-43 kcal/mol
Surface area41980 Å2
MethodPISA
Unit cell
Length a, b, c (Å)73.056, 120.742, 139.346
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
Acetylcholine-binding protein / ACh-binding protein / AchBP


Mass: 24250.875 Da / Num. of mol.: 5 / Fragment: UNP residues 21-229 / Mutation: Q55R
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Lymnaea stagnalis (great pond snail) / Plasmid: pPICZ B / Production host: Pichia pastoris (fungus) / Strain (production host): X-33 / References: UniProt: P58154
#2: Chemical
ChemComp-N2Y / (2Z)-1-[(6-chloropyridin-3-yl)methyl]imidazolidin-2-imine


Mass: 210.663 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C9H11ClN4 / Comment: agonist*YM
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 460 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY
Sequence detailsAUTHORS STATE THAT BEFORE CRYSTALLIZATION, THE N-GLUCOSIDE GROUPS WERE REMOVED BY PEPTIDE-N- ...AUTHORS STATE THAT BEFORE CRYSTALLIZATION, THE N-GLUCOSIDE GROUPS WERE REMOVED BY PEPTIDE-N-GLYCOSIDASE F. THE CONFLICT IS DUE TO POST-TRANSLATIONAL MODIFICATION AND SAMPLE PREPARATION.

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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: 2.53 Å3/Da / Density % sol: 51.46 %
Crystal growTemperature: 293 K / Method: vapor diffusion / pH: 8.5
Details: 24-27 % PEG4000, 0.1-0.3M LiSO4, 0.1M Tris-HCl, pH 8.5, 0.5mM Desnitro-imidacloprid, VAPOR DIFFUSION, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SPring-8 / Beamline: BL26B2 / Wavelength: 0.9 Å
DetectorType: MARMOSAIC 225 mm CCD / Detector: CCD / Date: Jul 3, 2008
RadiationMonochromator: fixed-exit double crystal (Si(111)) monochromator
Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9 Å / Relative weight: 1
ReflectionResolution: 2.25→50 Å / Num. all: 59074 / Num. obs: 58935 / % possible obs: 99.8 % / Observed criterion σ(I): -3 / Redundancy: 7.3 % / Biso Wilson estimate: 30.3 Å2 / Rmerge(I) obs: 0.076 / Net I/σ(I): 38.2
Reflection shellResolution: 2.25→2.33 Å / Redundancy: 7 % / Rmerge(I) obs: 0.449 / Mean I/σ(I) obs: 4.9 / Num. unique all: 5802 / % possible all: 99.7

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Processing

Software
NameVersionClassification
BBSdata collection
PHASERphasing
CNS1.2refinement
HKL-2000data reduction
SCALEPACKdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2ZJU

2zju


Resolution: 2.25→20.78 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 2370805.92 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 1 / Stereochemistry target values: Engh & Huber / Details: BULK SOLVENT MODEL USED
RfactorNum. reflection% reflectionSelection details
Rfree0.262 2941 5 %RANDOM
Rwork0.215 ---
all0.217 58862 --
obs0.215 58862 99.7 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 39.6117 Å2 / ksol: 0.35 e/Å3
Displacement parametersBiso mean: 43.8 Å2
Baniso -1Baniso -2Baniso -3
1--0.38 Å20 Å20 Å2
2--7.88 Å20 Å2
3----7.5 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.38 Å0.3 Å
Luzzati d res low-5 Å
Luzzati sigma a0.36 Å0.28 Å
Refinement stepCycle: LAST / Resolution: 2.25→20.78 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms8211 0 70 460 8741
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.007
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.4
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d25.4
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.73
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_scangle_it
LS refinement shellResolution: 2.25→2.39 Å / Rfactor Rfree error: 0.016 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.347 461 4.9 %
Rwork0.285 9009 -
obs--97.5 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2dna-rna_rep.paramdna-rna.top
X-RAY DIFFRACTION3water_rep.paramwater.top
X-RAY DIFFRACTION4ion.paramion.top
X-RAY DIFFRACTION5dni.pardni.top

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