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CryoEM structure of GNE-1952-alkylated KRAS G12C in complex with engineered conformationally rigid Fab 2H11.4DS
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4ZFG
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 14.435 f_angle_d 1.041 f_chiral_restr 0.064 f_bond_d 0.013 f_plane_restr 0.011
Sample GNE-1952-alkylated KRAS G12C in complex with Fab 2H11.4DS Sample Components GNE-1952-alkylated KRAS G12C Fab 2H11.4DS
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 926738 Reported Resolution (Å) 2.8 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7RP3) Refinement Space Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 40.3
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 500 Maximum Defocus (nm) 1500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 105000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC MODEL FITTING ISOLDE MODEL FITTING UCSF ChimeraX INITIAL EULER ASSIGNMENT cryoSPARC FINAL EULER ASSIGNMENT cryoSPARC RECONSTRUCTION cryoSPARC MODEL REFINEMENT PHENIX 1.21rc1_5049
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION