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The structure of a histidine kinase-response regulator complex sheds light into two-component signaling and reveals a novel cis autophosphorylation mechanism
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3DGE PDB entry 3DGE
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 4.6 294 1.9M ammonium sulfate, 0.1M sodium acetate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Crystal Properties Matthews coefficient Solvent content 2.16 42.92
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 155.233 α = 90 b = 155.233 β = 90 c = 34.482 γ = 120
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 200 CCD ADSC QUANTUM 315r Mirrors 2008-06-18 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE BM30A 0.979 ESRF BM30A
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 1.8 29.3 99.7 0.073 0.33 7.083 10.7 44647 2 2
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) 1.8 1.9 99.2 0.333 0.333 2.2 9.5 6412
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (I) Cut-off Sigma (F) 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 MOLECULAR REPLACEMENT THROUGHOUT PDB entry 3DGE 1.8 25 2 2 44636 2209 99.74 0.188 0.188 0.185 0.1874 0.237 0.1821 RANDOM 16.99
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] 0.3 0.15 0.3 -0.46
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 41.804 r_dihedral_angle_4_deg 17.21 r_dihedral_angle_3_deg 15.008 r_dihedral_angle_1_deg 5.361 r_scangle_it 2.901 r_scbond_it 1.751 r_angle_refined_deg 1.214 r_mcangle_it 1.079 r_mcbond_it 0.682 r_nbtor_refined 0.299
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 41.804 r_dihedral_angle_4_deg 17.21 r_dihedral_angle_3_deg 15.008 r_dihedral_angle_1_deg 5.361 r_scangle_it 2.901 r_scbond_it 1.751 r_angle_refined_deg 1.214 r_mcangle_it 1.079 r_mcbond_it 0.682 r_nbtor_refined 0.299 r_symmetry_vdw_refined 0.228 r_nbd_refined 0.205 r_xyhbond_nbd_refined 0.18 r_symmetry_hbond_refined 0.149 r_chiral_restr 0.08 r_metal_ion_refined 0.036 r_bond_refined_d 0.009 r_gen_planes_refined 0.004
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3901 Nucleic Acid Atoms Solvent Atoms 653 Heterogen Atoms 29
Software Software Software Name Purpose SCALA data scaling PHASER phasing REFMAC refinement PDB_EXTRACT data extraction ADSC data collection MOSFLM data reduction