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SARS CoV-2 Spike protein Ectodomain with internal tag, 1RBD-up conformation
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7KRQ
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 5.7364 f_angle_d 0.6494 f_chiral_restr 0.0574 f_plane_restr 0.0033 f_bond_d 0.0031
Sample SARS CoV2 Spike protein Ectodomain with Internal tag
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 82364 Reported Resolution (Å) 2.55 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7KRQ) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type TFS FALCON 4i (4k x 4k) Electron Dose (electrons/Å**2) 43.97
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 2500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 165000 Calibrated Magnification 191780 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC CTF CORRECTION cryoSPARC MODEL FITTING UCSF Chimera MODEL REFINEMENT PHENIX 1.20.1.4487-000 MODEL REFINEMENT Coot INITIAL EULER ASSIGNMENT cryoSPARC CLASSIFICATION cryoSPARC RECONSTRUCTION cryoSPARC V4.4.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION