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CRYSTAL STRUCTURE OF AN 18 BASE PAIR COPY CONTROL RELATED RNA DUPLEX
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model Other A-form RNA
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 293 (NH4)2SO4, SODIUM CACODYLATE, MGCL2, ROP PROTEIN, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.4 49.5
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 43.806 α = 90 b = 43.806 β = 90 c = 29.17 γ = 120
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 PRINCETON 2K 1997-05-17 M SINGLE WAVELENGTH 2 1 x-ray 100 IMAGE PLATE RIGAKU RAXIS 1997-07-06 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON CHESS BEAMLINE A1 CHESS A1 2 ROTATING ANODE RIGAKU RU300
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 1.2 30 92.5 0.073 31.8 4.2 19666 18266 -3 -3 21.7
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) 1.2 1.24 77.1 0.274 5.2 2.8
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R A-RNA 1.2 30 18266 909 92.5 0.1175 0.1158 0.1254 0.1503 0.1469
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]
Coordinate Error Structure Solution Method Refinement High Resolution Refinement Low Resolution 22 227 578
RMS Deviations Key Refinement Restraint Deviation s_approx_iso_adps 0.086 s_from_restr_planes 0.031 s_anti_bump_dis_restr 0.029 s_angle_d 0.027 s_similar_adp_cmpnt 0.026 s_bond_d 0.009 s_rigid_bond_adp_cmpnt 0.004 s_similar_dist s_zero_chiral_vol s_non_zero_chiral_vol
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms Nucleic Acid Atoms 1415 Solvent Atoms 195 Heterogen Atoms 4
Software Software Software Name Purpose X-PLOR model building SHELXL-97 refinement DENZO data reduction SCALEPACK data scaling X-PLOR phasing