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Torpedo californica acetylcholinesterase complexed with Ca+2
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1EA5
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 5.8 293 By mixing 2 uL of protein (10-13 mg/mL in 0.1 M NaCl/0.1 M 2-morpholinoethanesulfonic acid (MES)/0.02% sodium azide, pH 5.8) with 2 uL of precipitant solution (0.2 M calcium acetate/10-15% (v/v) polyethylene glycol (PEG) 5000 monomethyl ether, 0.1 M MES, pH 6.5), thus yielding crystals of the Ca+2/TcAChE complex.
Crystal Properties Matthews coefficient Solvent content 3.3 62.7
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 139.074 α = 90 b = 139.074 β = 90 c = 71.319 γ = 120
Symmetry Space Group P 32 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 155 CCD ADSC QUANTUM 1 2000-02-10 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID14-2 .93 ESRF ID14-2
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 2.23 19.96 99.36 0.061 11.6 4 38704 39.68
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 2.25 2.33 0.347
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 1EA5 2.23 19.96 1.34 38702 1913 99.53 0.1813 0.179 0.1802 0.2256 0.2252 43.68
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]
RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 3.0504 f_angle_d 0.8764 f_chiral_restr 0.0566 f_bond_d 0.0081 f_plane_restr 0.0052
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4226 Nucleic Acid Atoms Solvent Atoms 248 Heterogen Atoms 92
Software Software Software Name Purpose PHENIX refinement REFMAC refinement DENZO data reduction SCALEPACK data scaling MERLOT phasing Coot model building