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Torpedo californica acetylcholinesterase complexed with Mg+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 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 magnesium acetate/10-15% (v/v) polyethylene glycol (PEG) 5000 monomethyl ether, 0.1 M MES, pH 6.5), thus yielding crystals of the Mg+2/TcAChE complex
Crystal Properties Matthews coefficient Solvent content 3.24 62.04
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 138.217 α = 90 b = 138.217 β = 90 c = 71.376 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 2001-01-12 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID14-2 0.93 ESRF ID14-2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) CC (Half) 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 1.85 34.83 99.7 0.85 10.6 2 69953 28.37
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.86 1.87 99.94 0.3 2.5
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 FREE R-VALUE 1EA5 1.85 34.83 66943 3292 99.64 0.2041 0.2022 0.2065 0.2413 0.2443 4.92% 36.12
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 3.5303 f_angle_d 0.8115 f_chiral_restr 0.0519 f_bond_d 0.0071 f_plane_restr 0.0051
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4200 Nucleic Acid Atoms Solvent Atoms 400 Heterogen Atoms 127
Software Software Software Name Purpose REFMAC refinement PHENIX refinement DENZO data reduction SCALEPACK data scaling MERLOT phasing Coot model building