ELECTRON MICROSCOPY

Sample

Complex of RC1 variant of BG505 SOSIP.664 trimer with three elicted Ab874NHP Fabs and three human bNAb 8ANC195 Fabs

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details 0 blot force 2 s blot time 3 microliter sample added to freshly glow-discharged grids
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 86564
Reported Resolution (Å) 3.9
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 ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å2) 40
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TALOS ARCTICA
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 FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 73000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details ?
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION EPU ?
CTF CORRECTION Gctf 1.06
MODEL FITTING UCSF Chimera ?
INITIAL EULER ASSIGNMENT cryoSPARC 2.1
FINAL EULER ASSIGNMENT cryoSPARC 2.1
CLASSIFICATION cryoSPARC 2.1
RECONSTRUCTION cryoSPARC 2.1
MODEL REFINEMENT PHENIX 1.14
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
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