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A CURVED RNA HELIX INCORPORATING AN INTERNAL LOOP WITH G-A AND A-A NON-WATSON-CRICK BASE PAIRING
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 157D STANDARD A-FORM DUPLEX AND ARL048
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.5 pH 7.50, VAPOR DIFFUSION, HANGING DROP
Crystal Properties Matthews coefficient Solvent content 2.33 51.2
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 37.71 α = 90 b = 37.71 β = 90 c = 88.3 γ = 120
Symmetry Space Group P 65 2 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray IMAGE PLATE MARRESEARCH 1992-10-10 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SSRL BEAMLINE BL7-1 SSRL BL7-1
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 2.3 25 94.3 0.0745 2.8 2.85 1811
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation 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-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE-R STANDARD A-FORM DUPLEX AND ARL048 2.3 8 3 1502 138 0.186 0.186 0.198 RANDOM 23.64
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_mcangle_it 1.7 x_mcbond_it 1.3 x_angle_deg 1.15 x_bond_d 0.02 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_mcangle_it 1.7 x_mcbond_it 1.3 x_angle_deg 1.15 x_bond_d 0.02 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 x_dihedral_angle_d_na x_dihedral_angle_d_prot x_improper_angle_d x_improper_angle_d_na x_improper_angle_d_prot x_scbond_it x_scangle_it
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms Nucleic Acid Atoms 258 Solvent Atoms 18 Heterogen Atoms 1
Software Software Software Name Purpose X-PLOR refinement R-AXIS data reduction AMoRE phasing