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Crystal structure of RNase III from Aquifex aeolicus complexed with ds-RNA at 1.7-Angstrom Resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1RC7
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 8.5 293 0.2 M MgCl2 + 3.4 M 1,6 Hexanediol in 0.1 M Tris-Cl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.54 51.57
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 95.4 α = 90 b = 119.9 β = 90 c = 58.9 γ = 90
Symmetry Space Group P 21 21 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 CCD MARMOSAIC 300 mm CCD mirror 2006-07-03 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 22-ID 1.0000 APS 22-ID
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 1.7 30 89.6 0.051 22.2 3.4 67288 67288 23.2
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) 1.7 1.76 62.2 0.231 2.8 1.7 4607
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 1RC7 1.7 29.44 67277 67277 3425 89.6 0.194 0.194 0.194 0.2008 0.22 0.2225 RANDOM 33
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] 4.94 -2.2 -2.74
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 16.6 c_scangle_it 5.72 c_scbond_it 3.92 c_mcangle_it 3.61 c_mcbond_it 2.67 c_angle_deg 1.2 c_improper_angle_d 0.95 c_bond_d 0.006 c_bond_d_na c_bond_d_prot
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 16.6 c_scangle_it 5.72 c_scbond_it 3.92 c_mcangle_it 3.61 c_mcbond_it 2.67 c_angle_deg 1.2 c_improper_angle_d 0.95 c_bond_d 0.006 c_bond_d_na c_bond_d_prot c_angle_d c_angle_d_na c_angle_d_prot c_angle_deg_na c_angle_deg_prot c_dihedral_angle_d_na c_dihedral_angle_d_prot c_improper_angle_d_na c_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3627 Nucleic Acid Atoms 1034 Solvent Atoms 445 Heterogen Atoms 19
Software Software Software Name Purpose CNS refinement MAR345 data collection HKL-2000 data reduction HKL-2000 data scaling PHASER phasing