7TB4

Cryo-EM structure of the spike of SARS-CoV-2 Omicron variant of concern


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d6.173
f_angle_d0.548
f_chiral_restr0.045
f_plane_restr0.004
f_bond_d0.002
Sample
SARS-CoV-2 spike of the Omicron Variant of Concern
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsBlot for 2-3.5 seconds before plugging.
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles266434
Reported Resolution (Å)3.29
Resolution MethodFSC 0.5 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1 (7KLS)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeOTHER
Electron Dose (electrons/Å**2)40
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1000
Maximum Defocus (nm)2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification105000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
CTF CORRECTIONcryoSPARC2.15
MODEL FITTINGCoot0.93
MODEL REFINEMENTPHENIX1.19
RECONSTRUCTIONcryoSPARC2.15
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION