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Crystal structure of RNase III from Aquifex aeolicus complexed with ds-RNA at 2.9-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 NaCl + 16% PEG3350 in 0.1 M Tris-Cl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.51 50.99
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 101.596 α = 90 b = 101.657 β = 103.69 c = 67.082 γ = 90
Symmetry Space Group C 1 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 100 CCD MARMOSAIC 300 mm CCD mirror 2005-01-18 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 2.9 30 89.1 0.072 13.3 2.6 13199 13199 72.4
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) 2.9 3 53.4 0.16 3.4 1.6
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 (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 2.9 29.11 13142 13142 669 89.1 0.238 0.238 0.235 0.275 0.2643 RANDOM 98.4
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] 21.63 5.75 -0.29 -21.35
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 16.9 c_scangle_it 8.18 c_scbond_it 5.52 c_mcangle_it 4.85 c_mcbond_it 3.04 c_improper_angle_d 0.86 c_angle_deg 0.8 c_bond_d 0.004 c_bond_d_na c_bond_d_prot
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 16.9 c_scangle_it 8.18 c_scbond_it 5.52 c_mcangle_it 4.85 c_mcbond_it 3.04 c_improper_angle_d 0.86 c_angle_deg 0.8 c_bond_d 0.004 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 3677 Nucleic Acid Atoms 980 Solvent Atoms 28 Heterogen Atoms
Software Software Software Name Purpose CNS refinement MAR345 data collection HKL-2000 data reduction HKL-2000 data scaling PHASER phasing