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Crystal structure of stringent starvation protein A (SspA), an RNA polymerase-associated transcription factor
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.5 291 diammonium hydrogen citrate, PEG 3350, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Crystal Properties Matthews coefficient Solvent content 2.654 51.87
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 100.412 α = 90 b = 100.412 β = 90 c = 181.89 γ = 120
Symmetry Space Group P 65 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 mirrors 2002-02-19 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X9B 1.06129 NSLS X9B
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 2.02 30 100 0.108 16.12 6.97 36005 21
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) 2.02 2.09 97.4 0.519 2.83 5.61 3455
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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 MIR THROUGHOUT 2.02 29.46 36005 36005 1785 99.4 0.181 0.181 0.179 0.1789 0.215 0.216 RANDOM 25.2
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] -0.94 0.32 -0.94 1.88
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 21.2 c_scangle_it 5.61 c_scbond_it 4.37 c_mcangle_it 3.41 c_mcbond_it 2.61 c_angle_deg 1.3 c_improper_angle_d 0.92 c_bond_d 0.009
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3333 Nucleic Acid Atoms Solvent Atoms 441 Heterogen Atoms 26
Software Software Software Name Purpose SOLVE phasing SHARP phasing CNS refinement DENZO data reduction SCALEPACK data scaling