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Zif268 D20A Mutant Bound to WT DNA Site
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1AAY 1AAY.pdb with waters and sidechains for residues 18,20, and 21 removed
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 8 298 300 mM NaCl, 10% PEG 1450, 25 mM Bis-Tris propane, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.29 46.35
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 44.26 α = 90 b = 56.24 β = 90 c = 131.47 γ = 90
Symmetry Space Group C 2 2 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 125 IMAGE PLATE RIGAKU RAXIS IV Yale Mirrors 1999-05-18 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU200 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 1.9 20 98.3 0.056 13117 13117 18.8
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1.9 1.97 87 1113
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work (Depositor) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1AAY.pdb with waters and sidechains for residues 18,20, and 21 removed 1.9 20 2 13117 11780 1207 88.6 0.214 0.214 0.214 0.266 RANDOM 28.8
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 x_dihedral_angle_d 21.7 x_scangle_it 3.62 x_mcangle_it 3.09 x_scbond_it 2.34 x_mcbond_it 1.92 x_improper_angle_d 1.38 x_angle_deg 1.3 x_bond_d 0.008
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 709 Nucleic Acid Atoms 445 Solvent Atoms 136 Heterogen Atoms 3
Software Software Software Name Purpose X-PLOR model building X-PLOR refinement DENZO data reduction SCALEPACK data scaling X-PLOR phasing