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- PDB-1gqs: ACETYLCHOLINESTERASE (E.C. 3.1.1.7) COMPLEXED WITH NAP -

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Basic information

Entry
Database: PDB / ID: 1gqs
TitleACETYLCHOLINESTERASE (E.C. 3.1.1.7) COMPLEXED WITH NAP
ComponentsACETYLCHOLINESTERASE
KeywordsHYDROLASE / NEUROTRANSMITTER CLEAVAGE / ANTI-ALZHEIMER DRUG
Function / homology
Function and homology information


acetylcholine catabolic process in synaptic cleft / choline metabolic process / acetylcholinesterase / acetylcholinesterase activity / synaptic cleft / side of membrane / synapse / extracellular space / plasma membrane
Similarity search - Function
Acetylcholinesterase, fish/snake / : / Cholinesterase / Carboxylesterase type B, conserved site / Carboxylesterases type-B signature 2. / Carboxylesterase type B, active site / Carboxylesterases type-B serine active site. / Carboxylesterase, type B / Carboxylesterase family / Alpha/Beta hydrolase fold, catalytic domain ...Acetylcholinesterase, fish/snake / : / Cholinesterase / Carboxylesterase type B, conserved site / Carboxylesterases type-B signature 2. / Carboxylesterase type B, active site / Carboxylesterases type-B serine active site. / Carboxylesterase, type B / Carboxylesterase family / Alpha/Beta hydrolase fold, catalytic domain / Alpha/Beta hydrolase fold / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
3-[(1S)-1-(DIMETHYLAMINO)ETHYL]PHENOL / Acetylcholinesterase
Similarity search - Component
Biological speciesTORPEDO CALIFORNICA (Pacific electric ray)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 3 Å
AuthorsBar-on, P. / Millard, C.B. / Harel, M. / Dvir, H. / Enz, A. / Sussman, J.L. / Silman, I.
Citation
Journal: Biochemistry / Year: 2002
Title: Kinetic and Structural Studies on the Interaction of Cholinesterases with the Anti-Alzheimer Drug Rivastigmine
Authors: Bar-on, P. / Millard, C.B. / Harel, M. / Dvir, H. / Enz, A. / Sussman, J.L. / Silman, I.
#1: Journal: Science / Year: 1991
Title: Atomic Structure of Acetylcholinesterase from Torpedo Californica: A Prototypic Acetylcholine-Binding Protein
Authors: Sussman, J.L. / Harel, M. / Frolow, F. / Oefner, C. / Goldman, A. / Toker, L. / Silman, I.
History
DepositionDec 4, 2001Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 15, 2002Provider: repository / Type: Initial release
Revision 1.1Sep 7, 2011Group: Derived calculations / Non-polymer description ...Derived calculations / Non-polymer description / Other / Refinement description / Structure summary / Version format compliance
Revision 1.2Jul 29, 2020Group: Data collection / Derived calculations ...Data collection / Derived calculations / Other / Structure summary
Category: chem_comp / entity ...chem_comp / entity / pdbx_chem_comp_identifier / pdbx_database_status / pdbx_entity_nonpoly / struct_conn / struct_site / struct_site_gen
Item: _chem_comp.name / _chem_comp.type ..._chem_comp.name / _chem_comp.type / _entity.pdbx_description / _pdbx_database_status.status_code_sf / _pdbx_entity_nonpoly.name / _struct_conn.pdbx_role
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 1.3Dec 13, 2023Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.4Oct 16, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: ACETYLCHOLINESTERASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)60,8024
Polymers60,1941
Non-polymers6083
Water2,558142
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)111.040, 111.040, 137.227
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein ACETYLCHOLINESTERASE / ACHE


Mass: 60193.977 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) TORPEDO CALIFORNICA (Pacific electric ray)
Organ: ELECTRIC ORGAN / Variant: G2 FORM / Tissue: ELECTROPLAQUE / References: UniProt: P04058, acetylcholinesterase
#2: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 2
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
#3: Chemical ChemComp-SAF / 3-[(1S)-1-(DIMETHYLAMINO)ETHYL]PHENOL


Mass: 165.232 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15NO
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 142 / 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: 4.06 Å3/Da / Density % sol: 69.68 %
Crystal growpH: 5.8 / Details: pH 5.80
Crystal grow
*PLUS
Temperature: 4 ℃ / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
134-38 %(v/v)PEG2001reservoir
20.1 MMES1reservoirpH5.8
311 mg/mlprotein1drop

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU / Wavelength: 1.54
DetectorDetector: IMAGE PLATE / Date: Aug 15, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 3→29.2 Å / Num. obs: 20004 / % possible obs: 99.4 % / Observed criterion σ(I): 0 / Redundancy: 5.3 % / Rmerge(I) obs: 0.16 / Net I/σ(I): 5
Reflection shellResolution: 3→3.11 Å / Rmerge(I) obs: 0.64 / Mean I/σ(I) obs: 1.4
Reflection
*PLUS
Num. all: 20244 / Num. obs: 20097 / Num. measured all: 243327 / Rmerge(I) obs: 0.16
Reflection shell
*PLUS
Highest resolution: 3 Å / % possible obs: 98.4 % / Rmerge(I) obs: 0.529

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Processing

Software
NameVersionClassification
CNS1refinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1ACE

1ace
PDB Unreleased entry


Resolution: 3→29.2 Å / Rfactor Rfree error: 0.008 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.262 1006 5 %RANDOM
Rwork0.212 ---
obs0.212 20004 99.9 %-
Solvent computationSolvent model: FLAT / Bsol: 41.5 Å2 / ksol: 0.349 e/Å3
Displacement parametersBiso mean: 23.62 Å2
Baniso -1Baniso -2Baniso -3
1-9.86 Å28.82 Å20 Å2
2--9.86 Å20 Å2
3----19.72 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.47 Å0.36 Å
Luzzati d res low-5 Å
Luzzati sigma a0.88 Å0.66 Å
Refinement stepCycle: LAST / Resolution: 3→29.2 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4245 0 40 142 4427
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.008
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_d23
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.9
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.621.5
X-RAY DIFFRACTIONc_mcangle_it2.772
X-RAY DIFFRACTIONc_scbond_it2.52
X-RAY DIFFRACTIONc_scangle_it3.972.5
LS refinement shellResolution: 3→3.19 Å / Rfactor Rfree error: 0.033 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.424 164 5 %
Rwork0.355 3094 -
obs--99.6 %
Xplor fileSerial no: 1 / Param file: PARHCSDX.PRO / Topol file: TOPHCSDX.PRO
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg23
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.9

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