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Crystal structure of E. coli RNA polymerase alpha subunit C-terminal domain
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1LB2 PDB ENTRY 1LB2
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7.5 277 0.1M hepes, 1.4M sodium citrate, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Crystal Properties Matthews coefficient Solvent content 2.58 52.39
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 51.342 α = 90 b = 67.612 β = 90.12 c = 116.553 γ = 90
Symmetry Space Group P 1 21 1
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 ADSC QUANTUM 270 2009-02-24 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X6A 1.0 NSLS X6A
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 2.05 47.036 99.9 0.082 0.082 12.9 3.7 50271 50235 2 2 29.7
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 2.05 2.16 99.8 0.544 0.544 2.1 3.7 7266
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-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT PDB ENTRY 1LB2 2.05 47.023 1.38 50220 2000 99.91 0.194 0.193 0.236 0.2252 RANDOM 31.351
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 f_dihedral_angle_d 15.305 f_angle_d 0.775 f_chiral_restr 0.044 f_bond_d 0.003 f_plane_restr 0.002
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 5216 Nucleic Acid Atoms Solvent Atoms 317 Heterogen Atoms 4
Software Software Software Name Purpose MOSFLM data reduction SCALA data scaling PHASER phasing PHENIX refinement PDB_EXTRACT data extraction HKL-2000 data collection