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Crystal structure of KRAS(Q61K) bound to GDP and ligand
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7T47 Used as molecular replacement search model.
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.5 296 0.1 M LiCl, 0.1 M HEPES pH 7.5, and 32% PEG 6000.
Crystal Properties Matthews coefficient Solvent content 2.08 41.01
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 119.492 α = 90 b = 37.765 β = 94.802 c = 71.7 γ = 90
Symmetry Space Group C 1 2 1
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 315r 2026-02-06 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ALS BEAMLINE 8.2.2 1.000000 ALS 8.2.2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Rpim I (All) CC (Half) 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 2.05 47.75 99.5 0.078 0.092 0.049 0.998 15 6.7 20292 32.21
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Rpim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.05 2.11 99.6 0.696 0.822 0.433 0.855 2.3 6.7
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 2.05 47.75 1.35 20278 2004 99.34 0.2061 0.2014 0.2034 0.2492 0.248 36.42
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 20.8193 f_angle_d 0.7589 f_chiral_restr 0.0436 f_plane_restr 0.0035 f_bond_d 0.0025
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2538 Nucleic Acid Atoms Solvent Atoms 194 Heterogen Atoms 160
Software Software Software Name Purpose PHENIX refinement MOSFLM data reduction Aimless data scaling PHENIX phasing