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E. coli RNA polymerase alpha subunit CTD in complex with CAP and DNA: A(5)-tract binding site for alpha CTD
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1LB2
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 298 28% (w/v) PEG4000, 0.2 M ammonium acetate, 0.01 M sarcosine, 0.1 M sodium citrate, pH 5.6
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 176.312 α = 90 b = 176.312 β = 90 c = 158.493 γ = 120
Symmetry Space Group P 62 2 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 ADSC QUANTUM 4 2004-02-14 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X25 1.10 NSLS X25
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 5.0098 50 99.7 0.051 10.1 18.7 6646
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 5.0098 5.18 100 0.733 19.2
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 (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 1LB2 5.0098 49.927 1.34 6615 663 99.41 0.1816 0.178 0.1845 0.2141 0.2224 random
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 23.092 f_angle_d 1.66 f_chiral_restr 0.074 f_bond_d 0.013 f_plane_restr 0.008 phenix.refine reference_model
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2181 Nucleic Acid Atoms 896 Solvent Atoms Heterogen Atoms 22
Software Software Software Name Purpose PHENIX refinement DENZO data reduction SCALEPACK data scaling PHASER phasing