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Structural evidence for feedback activation by RasGTP of the Ras-specific nucleotide exchange factor SOS
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1NVU PDB ENTRY 1NVU
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.5 277 1.2-1.5 M phosphate, 100 mM Hepes, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties Matthews coefficient Solvent content 3.93 68.42
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 184.163 α = 90 b = 184.163 β = 90 c = 179.076 γ = 90
Symmetry Space Group I 4 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 315 mirrors 2002-09-06 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ALS BEAMLINE 8.2.2 1.100 ALS 8.2.2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (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 2.18 64.19 95.2 0.103 13 4.4 74722 74722 -3 19.7
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 2.18 2.26 81.9 0.352 3.4 3.2 6315
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model 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 FOURIER SYNTHESIS THROUGHOUT PDB ENTRY 1NVU 2.18 64.19 72440 72440 5164 90.8 0.208 0.208 0.208 0.2075 0.241 0.2417 RANDOM 35.5
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] 1.71 1.71 -3.43
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 21.2 c_scangle_it 4.13 c_mcangle_it 2.64 c_scbond_it 2.62 c_mcbond_it 1.58 c_angle_deg 1.4 c_improper_angle_d 0.95 c_bond_d 0.008
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 6535 Nucleic Acid Atoms Solvent Atoms 315 Heterogen Atoms 58
Software Software Software Name Purpose CNS refinement DENZO data reduction SCALEPACK data scaling CNS phasing