ELECTRON MICROSCOPY

Sample

Complex between Influenza B/Washington/02/2019 virus neuraminidase (tetramer) and one copy of single-domain antibody hVHH-525

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument ?
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 158674
Reported Resolution (Å) 3.6
Resolution Method FSC 0.143 CUT-OFF
Other Details Compositional heterogeneity of the sample necessitated the use of a 3D processing strategy combining symmetry expansion, focused 3D classification without alignment, signal subtraction and localized refinement. The final particle set consists of 158674 symmetry expanded and signal subtracted particles.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 60
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model JEOL CRYO ARM 300
Minimum Defocus (nm) 500
Maximum Defocus (nm) 2500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION crYOLO ?
IMAGE ACQUISITION SerialEM ?
CTF CORRECTION cryoSPARC 4.2
INITIAL EULER ASSIGNMENT cryoSPARC 4.2
FINAL EULER ASSIGNMENT cryoSPARC 4.2
CLASSIFICATION cryoSPARC 4.2
RECONSTRUCTION cryoSPARC 4.2
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?