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STRUCTURE OF A TRANSCRIBING T7 RNA POLYMERASE INITIATION COMPLEX
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1CEZ
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 8.7 pH 8.70
Crystal Properties Matthews coefficient Solvent content 2.8 58
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 221.2 α = 90 b = 73.6 β = 90 c = 80.9 γ = 90
Symmetry Space Group P 21 21 2
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 BRANDEIS M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X25 NSLS X25
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 2.4 40 97.8 0.078 0.078 10.6 3.8 51405 48.8
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 2.4 2.53 95.7 0.37 0.37 1.6 3.2
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-Work (DCC) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1CEZ 2.4 40 3 51475 2307 97.8 0.223 0.223 0.2416 0.267 RANDOM 47.1
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] -1.13 -4.59 5.72
RMS Deviations Key Refinement Restraint Deviation c_scangle_it 4.39 c_mcangle_it 3.11 c_scbond_it 3.1 c_mcbond_it 1.91 c_angle_deg 1.7 c_bond_d 0.011 c_bond_d_na c_bond_d_prot c_angle_d c_angle_d_na
RMS Deviations Key Refinement Restraint Deviation c_scangle_it 4.39 c_mcangle_it 3.11 c_scbond_it 3.1 c_mcbond_it 1.91 c_angle_deg 1.7 c_bond_d 0.011 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 c_dihedral_angle_d_na c_dihedral_angle_d_prot c_improper_angle_d c_improper_angle_d_na c_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 6696 Nucleic Acid Atoms 809 Solvent Atoms 487 Heterogen Atoms
Software Software Software Name Purpose CNS refinement MOSFLM data reduction SCALA data scaling