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Crystal Structure of Staphylococcal nuclease variant V66Y/P117G/H124L/S128A at room temperature
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model Other Staphylococcal nuclease V66E/P117G/H124L/S128A variant (at 100K), with b-factors set to 20.0 A^2 and residue 66 truncated to Ala
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.8 277 38% MPD, 0.025M potassium phosphate, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K
Crystal Properties Matthews coefficient Solvent content 2.28 46.02
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 49.022 α = 90 b = 49.022 β = 90 c = 63.838 γ = 90
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 296 CCD APEX II CCD 2006-05-24 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SEALED TUBE OTHER
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 2.1 50 100 0.0328 24.29 7.86 8914 8913
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) 2.1 2.2 100 0.2219 4.28 5.92 1146
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) 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 Staphylococcal nuclease V66E/P117G/H124L/S128A variant (at 100K), with b-factors set to 20.0 A^2 and residue 66 truncated to Ala 2.1 50 8870 8870 940 99.8 0.192 0.192 0.182 0.1818 0.215 0.2153 random 31.116
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] -3.075 -3.075 6.149
RMS Deviations Key Refinement Restraint Deviation c_scangle_it 3.845 c_scbond_it 2.509 c_mcangle_it 2.306 c_mcbond_it 1.477
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1042 Nucleic Acid Atoms Solvent Atoms 37 Heterogen Atoms
Software Software Software Name Purpose CNS refinement PDB_EXTRACT data extraction APEX data collection APEX data reduction CNS phasing