ELECTRON MICROSCOPY

Sample

SARS-CoV-2 spike glycoprotein trimer complexed with Fab fragment of anti-RBD antibody E7

Specimen Preperation
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 198525
Reported Resolution (Å) 3.12
Resolution Method FSC 0.143 CUT-OFF
Other Details Non-uniform refinement in cryoSPARC
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 31.6
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 2400
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 81000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION Warp 1.0.9
IMAGE ACQUISITION SerialEM 3.8.6
CTF CORRECTION CTFFIND 4.1.14
MODEL FITTING UCSF Chimera 1.16
MODEL FITTING Coot 0.8.9.2-pre
INITIAL EULER ASSIGNMENT RELION 4.0-beta-2-commit-543db0
FINAL EULER ASSIGNMENT cryoSPARC 3.3.1+220215
RECONSTRUCTION cryoSPARC 3.3.1+220215
MODEL REFINEMENT Coot 0.8.9.2-pre
MODEL REFINEMENT PHENIX 1.20.1-4487
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?