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- PDB-2vq6: Torpedo californica acetylcholinesterase complexed with 2-PAM -

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Basic information

Entry
Database: PDB / ID: 2vq6
TitleTorpedo californica acetylcholinesterase complexed with 2-PAM
ComponentsACETYLCHOLINESTERASE
KeywordsHYDROLASE / SERINE ESTERASE / ALTERNATIVE SPLICING / NEUROTRANSMITTER DEGRADATION / LIPOPROTEIN / GLYCOPROTEIN / TORPEDO ACHE / CELL JUNCTION / ANTICANCER PRODRUG CPT- 11 / SYNAPSE / MEMBRANE / GPI-ANCHOR
Function / homology
Function and homology information


acetylcholine catabolic process in synaptic cleft / acetylcholinesterase / choline metabolic process / 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
Chem-FP1 / Acetylcholinesterase
Similarity search - Component
Biological speciesTORPEDO CALIFORNICA (Pacific electric ray)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.71 Å
AuthorsHarel, M. / Silman, I. / Sussman, J.L.
CitationJournal: To be Published
Title: The Structure of Torpedo Californica Acetylcholinesterase Complexed with 2-Pam
Authors: Harel, M. / Silman, I. / Sussman, J.L.
History
DepositionMar 11, 2008Deposition site: PDBE / Processing site: PDBE
SupersessionMay 13, 2008ID: 2VB4
Revision 1.0May 13, 2008Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Jul 29, 2020Group: Advisory / Data collection ...Advisory / Data collection / Derived calculations / Other / Structure summary
Category: chem_comp / database_PDB_caveat ...chem_comp / database_PDB_caveat / 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_leaving_atom_flag / _struct_conn.pdbx_role
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 1.4Dec 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 1.5Oct 23, 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)62,0025
Polymers61,3251
Non-polymers6774
Water1,67593
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
Unit cell
Length a, b, c (Å)113.950, 113.950, 138.050
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: 61325.090 Da / Num. of mol.: 1 / Fragment: RESIDUES 22-464 / Source method: isolated from a natural source
Details: 2-FORMYL-1-METHYL-PYRIDINIUM CHLORIDE (PRALYDOXIME, 2-PAM) IN ACTIVE SITE GORGE
Source: (natural) TORPEDO CALIFORNICA (Pacific electric ray)
References: UniProt: P04058, acetylcholinesterase
#2: Chemical ChemComp-FP1 / N-hydroxy-1-(1-methylpyridin-2(1H)-ylidene)methanamine


Mass: 138.167 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C7H10N2O
#3: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#4: 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
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 93 / 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: 4.2 Å3/Da / Density % sol: 70 % / Description: NONE

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: RIGAKU IMAGE PLATE / Detector: IMAGE PLATE / Date: Aug 4, 1991
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.8→15.66 Å / Num. obs: 26435 / % possible obs: 97.5 % / Observed criterion σ(I): 0 / Redundancy: 4.4 % / Rmerge(I) obs: 0.15
Reflection shellResolution: 2.71→2.78 Å

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Processing

Software
NameVersionClassification
REFMAC5.2.0019refinement
DENZOdata reduction
SCALEPACKdata scaling
PROTINphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2ACE

2ace


Resolution: 2.71→15.66 Å / Cor.coef. Fo:Fc: 0.941 / Cor.coef. Fo:Fc free: 0.886 / SU B: 10.334 / SU ML: 0.197 / Cross valid method: THROUGHOUT / ESU R: 0.359 / ESU R Free: 0.27 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
RfactorNum. reflection% reflectionSelection details
Rfree0.234 1340 5.1 %RANDOM
Rwork0.171 ---
obs0.174 25095 100 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 26.12 Å2
Baniso -1Baniso -2Baniso -3
1-0.16 Å20.08 Å20 Å2
2--0.16 Å20 Å2
3----0.24 Å2
Refinement stepCycle: LAST / Resolution: 2.71→15.66 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4220 0 43 93 4356
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.030.0224413
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg2.6511.9515993
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg8.7135533
X-RAY DIFFRACTIONr_dihedral_angle_2_deg33.26823.886211
X-RAY DIFFRACTIONr_dihedral_angle_3_deg23.47515709
X-RAY DIFFRACTIONr_dihedral_angle_4_deg17.851525
X-RAY DIFFRACTIONr_chiral_restr0.1660.2628
X-RAY DIFFRACTIONr_gen_planes_refined0.010.023415
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.2690.22056
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.3480.23050
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1830.2163
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2880.216
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.3140.22
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it1.2561.52681
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it2.31424268
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it3.41731962
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it5.64.51722
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.71→2.78 Å / Total num. of bins used: 20 /
RfactorNum. reflection
Rfree0.319 39
Rwork0.31 708

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