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Structural basis for enhanced infectivity and immune evasion of SARS-CoV-2 variants
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7KRR
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 8.115 f_angle_d 0.633 f_chiral_restr 0.047 f_bond_d 0.004 f_plane_restr 0.004
Sample one RBD-up-1 of pre-fusion SARS-CoV-2 B.1.1.7 spike variant glycoprotein
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 77942 Reported Resolution (Å) 3.33 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (7KRR) Refinement Space Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 53.4
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL FITTING Coot MODEL REFINEMENT PHENIX CLASSIFICATION RELION RECONSTRUCTION RELION
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2325106