ELECTRON MICROSCOPY

Sample

SARS-CoV-2 S 2P trimer complexed with monoclonal Fab fragments from neutralizing antibody C105

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details 3 microliters added, blotted for 3 s with 0 blot force
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 14119
Reported Resolution (Å) 3.66
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target Correlation coefficient
Overall B Value 90
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 60
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 2500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 105000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Collected with 3x3 pattern and beam image shift
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION SerialEM ?
CTF CORRECTION CTFFIND 4.1
MODEL FITTING UCSF Chimera ?
MODEL REFINEMENT PHENIX 1.17
INITIAL EULER ASSIGNMENT cryoSPARC 2.14.2
FINAL EULER ASSIGNMENT cryoSPARC 2.14.2
CLASSIFICATION cryoSPARC 2.14.2
RECONSTRUCTION cryoSPARC 2.14.2
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?