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Crystal Structure of the E. coli Histidine Kinase NarX Sensor Domain without Ligand
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION 7.5 277 isopropanol, PEG 3350, pH 7.5, vapor diffusion, temperature 277K
Crystal Properties Matthews coefficient Solvent content 1.95 36.84
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 28.241 α = 80.76 b = 39.822 β = 89.57 c = 83.947 γ = 85.29
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 2003-06-04 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X4A 0.9795 NSLS X4A
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 1.7 20 92.3 0.05 13.8 37137
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) 1.7 1.76 78.5 0.352 3170
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-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1.7 19.79 36888 1845 93 0.189 0.1859 0.239 0.2343 RANDOM 23.1
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] -1.35 -0.3 1.06 4.58 2.33 -3.23
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 18.4 c_scangle_it 4.48 c_scbond_it 3.18 c_mcangle_it 2.56 c_mcbond_it 1.9 c_angle_deg 1.5 c_improper_angle_d 1.15 c_bond_d 0.015
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3495 Nucleic Acid Atoms Solvent Atoms 446 Heterogen Atoms
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling CNS refinement PDB_EXTRACT data extraction CNS phasing