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Crystal Structure of Staphylococcal Nuclease mutant V66E/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 low-temperature coordinates
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.4 277 MPD, potassium phosphate, pH 6.4, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties Matthews coefficient Solvent content 2.254 45.5
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 48.794 α = 90 b = 48.794 β = 90 c = 63.788 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 298 IMAGE PLATE RIGAKU RAXIS IV mirrors 2003-07-01 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU300 1.5418
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 97.7 0.072 28.8 4.5 8569 8569 20.3
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 2.18 96 0.215 10 4.5 826
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 low-temperature coordinates 2.1 48.79 8568 8484 900 96.6 0.196 0.193 0.193 0.1938 0.217 0.2176 RANDOM 34.9
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] 2.62 2.62 -5.25
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22.6 c_scangle_it 3.91 c_scbond_it 2.52 c_mcangle_it 2.27 c_mcbond_it 1.44 c_angle_deg 1.3 c_improper_angle_d 0.63 c_bond_d 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1030 Nucleic Acid Atoms Solvent Atoms 32 Heterogen Atoms
Software Software Software Name Purpose CNS refinement DENZO data reduction SCALEPACK data scaling CNS phasing