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U1A RNA binding domain at 1.8 angstrom resolution reveals a pre-organized C-terminal helix
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1URN pdb entry 1urn
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 5 298 Potassium Malonate, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.18 43.56
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 91.819 α = 90 b = 91.819 β = 90 c = 120.448 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 IMAGE PLATE RIGAKU RAXIS IV osmics mirrors 2002-08-15 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU300 1.5418
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym 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 1.8 30 96.2 0.031 0.031 37.6 4 18308 17618 31.1
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.8 1.86 76.8 0.311 0.311 2.46 1.4 1365
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 pdb entry 1urn 1.8 29.16 18308 17616 1749 96.1 0.203 0.203 0.203 0.196 0.234 0.2285 RANDOM 40.3
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] 1.15 2.83 1.15 -2.3
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22.8 c_scangle_it 5.74 c_scbond_it 4.16 c_mcangle_it 4.01 c_mcbond_it 2.82 c_angle_deg 1.1 c_improper_angle_d 0.64 c_bond_d 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1450 Nucleic Acid Atoms Solvent Atoms 99 Heterogen Atoms 89
Software Software Software Name Purpose CNS refinement DENZO data reduction SCALEPACK data scaling CNS phasing