6TAN

X-RAY STRUCTURE OF HUMAN K-RAS G12C IN COMPLEX WITH COVALENT ISOQUINOLINONE INHIBITOR (COMPOUND 17)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
otherINHOUSE KRAS STRUCTURE

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6.3293100 NANOLITER COVALENTLY MODIFIED KRAS (CONCENTRATION 18.8 MG/ML, IN 0.02 M HEPES PH 7.5, 0.15 M NACL, 0.001 M MGCL2) ADDED TO 100 NANOLITER RESERVOIR (0.1 M NA-MES PH 6.3, 31 % PEG 4000)
Crystal Properties
Matthews coefficientSolvent content
2.0640.15

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 41.26α = 90
b = 58.747β = 90
c = 65.634γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS3 6M2019-02-07MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONBESSY BEAMLINE 14.10.9184BESSY14.1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym I (Observed)Rrim I (All)CC (Half)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.1643.7799.10.0610.0650.99913.77.25559518.98
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Rrim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.161.2398.11.4131.5310.5221.176.8

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTINHOUSE KRAS STRUCTURE1.1643.7753494210099.070.140910.139280.18337RANDOM20.843
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]
1.290.29-1.58
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1359
Nucleic Acid Atoms
Solvent Atoms225
Heterogen Atoms57

Software

Software
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction