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THE STRUCTURE OF AN RNA DODECAMER SHOWS HOW TANDEM U-U BASE PAIRS INCREASE THE RANGE OF STABLE RNA STRUCTURES AND THE DIVERSITY OF RECOGNITION SITES
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1SDR HELIX 1 OF THE RNA DODECAMER CONTAINING THE E. COLI SHINE DALGARNO SEQUENCE (NDB ID ARL062) WITH THE SEQUENCE MUTATED TO R(GGCGCUUGCGUC).
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION 7 pH 7.00, VAPOR DIFFUSION
Crystal Properties Matthews coefficient Solvent content 2.44 49.57
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 29.44 α = 98.87 b = 28.91 β = 72.95 c = 46.46 γ = 96.16
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 AREA DETECTOR SIEMENS-NICOLET X100 1995-03-22 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU200
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 2.4 15 95.4 0.076 44.6 4.9 5429
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) 2.4 2.6 95.5 0.182 8.05 2.4
Refinement Statistics Diffraction ID Structure Solution Method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT HELIX 1 OF THE RNA DODECAMER CONTAINING THE E. COLI SHINE DALGARNO SEQUENCE (NDB ID ARL062) WITH THE SEQUENCE MUTATED TO R(GGCGCUUGCGUC). 2.4 8 2 5142 0.191 0.191 0.1864 0.24
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 8 x_improper_angle_d 1.5 x_angle_deg 1.26 x_bond_d 0.01 x_bond_d_na x_bond_d_prot x_angle_d x_angle_d_na x_angle_d_prot x_angle_deg_na
RMS Deviations Key Refinement Restraint Deviation x_dihedral_angle_d 8 x_improper_angle_d 1.5 x_angle_deg 1.26 x_bond_d 0.01 x_bond_d_na x_bond_d_prot x_angle_d x_angle_d_na x_angle_d_prot x_angle_deg_na x_angle_deg_prot x_dihedral_angle_d_na x_dihedral_angle_d_prot x_improper_angle_d_na x_improper_angle_d_prot x_mcbond_it x_mcangle_it x_scbond_it x_scangle_it
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms Nucleic Acid Atoms 1008 Solvent Atoms 158 Heterogen Atoms
Software Software Software Name Purpose AMoRE phasing X-PLOR refinement XDS data reduction XSCALE data scaling