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CRYO-EM STRUCTURE OF SARS-COV-2 SPIKE : H11-H4 Q98R H100E nanobody complex in 1Up2Down conformation
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6ZHD
Sample Complex between Spike and nanobody H11-H4 Q98R H100E Sample Components Spike glycoprotein trimer with fibritin tag Nanobody H11-H4 Q98R H100E
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 396910 Reported Resolution (Å) 3.4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6ZHD, 6ZHD, 6ZHD) Refinement Space RECIPROCAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1500 Maximum Defocus (nm) 3000 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 EPU auto-function coma free correction
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.08 IMAGE ACQUISITION EPU CTF CORRECTION Gctf MODEL FITTING UCSF Chimera MODEL FITTING Coot MODEL REFINEMENT REFMAC INITIAL EULER ASSIGNMENT RELION 3.08 FINAL EULER ASSIGNMENT RELION 3.08 CLASSIFICATION RELION 3.08 RECONSTRUCTION RELION 3.08
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 909790