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Structure of acetylcholinesterase (E.C. 3.1.1.7) complexed with N-9-(1',2',3',4'-Tetrahydroacridinyl)-1,8- diaminooctane at 2.4 angstroms resolution.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2ACE PDB ENTRY 2ACE
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 5.8 277 PROTEIN WAS CRYSTALLISED FROM 28-33% V/V PEG 200 0.5M MES PH 5.8 AT 4 DEG. CELSIUS; THEN SOAKED IN MOTHER LIQUOR (40% V/V PEG 200 IN 0.1 M MES BUFFER, PH 5.8) CONTAINING 2MM N-9-(1',2',3',4'-TETRAHYDROACRIDINYL) -1,8-DIAMINOOCTANE BIS-HYDROCHLORIDE (A8NH2.2HCL)
Crystal Properties Matthews coefficient Solvent content 4.04 69.56
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 111.193 α = 90 b = 111.193 β = 90 c = 136.853 γ = 120
Symmetry Space Group P 31 2 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 120 IMAGE PLATE RIGAKU IMAGE PLATE OSMIC BLUE CONFOCAL MIRRO 2001-01-18 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RUH3R
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot 1 2.4 30 97 0.053 16.9 3.22 38785 37.2
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.4 2.49 97.5 0.397 2.44 9.95
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 2ACE 2.4 29.14 37571 1873 96.8 0.194 0.194 0.1955 0.24 0.2442 RANDOM 46.7
Temperature Factor Modeling Anisotropic B[1][1] Anisotropic B[1][2] Anisotropic B[1][3] Anisotropic B[2][2] Anisotropic B[2][3] Anisotropic B[3][3] 9.8 7.96 9.8 -19.61
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 23.9 c_scangle_it 2.953 c_scbond_it 2.059 c_mcangle_it 1.942 c_angle_deg 1.7 c_mcbond_it 1.223 c_improper_angle_d 1.19 c_bond_d 0.015 c_bond_d_na c_bond_d_prot
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 23.9 c_scangle_it 2.953 c_scbond_it 2.059 c_mcangle_it 1.942 c_angle_deg 1.7 c_mcbond_it 1.223 c_improper_angle_d 1.19 c_bond_d 0.015 c_bond_d_na c_bond_d_prot c_angle_d c_angle_d_na c_angle_d_prot c_angle_deg_na c_angle_deg_prot c_dihedral_angle_d_na c_dihedral_angle_d_prot c_improper_angle_d_na c_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4181 Nucleic Acid Atoms Solvent Atoms 160 Heterogen Atoms 52
Software Software Software Name Purpose CNS refinement DENZO data reduction SCALEPACK data scaling CNS phasing