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Crystal Structure of E. coli RNA Polymerase in complex with ppGpp
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7 298 20% PEG400, 0.18M strontium chloride, 0.1M HEPES , pH 7, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 3.25 62.14
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 187.575 α = 90 b = 206.164 β = 90 c = 311.062 γ = 90
Symmetry Space Group P 21 21 21
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 315 2011-07-21 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X25 1.0750 NSLS X25
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (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 4.2 39.97 99.7 13.2 88437 88171
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) 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 4.2 39.97 83775 4396 99.55 0.25027 0.24663 0.2604 0.31802 0.3295 RANDOM 280.907
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] -0.78 0.67 0.11
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.238 r_dihedral_angle_3_deg 13.801 r_dihedral_angle_4_deg 7.249 r_dihedral_angle_1_deg 2.944 r_angle_refined_deg 0.935 r_chiral_restr 0.057 r_bond_refined_d 0.01 r_gen_planes_refined 0.004
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 58242 Nucleic Acid Atoms Solvent Atoms Heterogen Atoms 84
Software Software Software Name Purpose HKL-2000 data collection PHASER phasing REFMAC refinement HKL-2000 data reduction HKL-2000 data scaling