ELECTRON MICROSCOPY

Sample

Complex between Spike and nanobody H11

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument SPOTITON
Cryogen Name ETHANE
Sample Vitrification Details SPT Labtech prototype 300 mesh 1.2/2.0 nanowire grids with a highly reproduceable rectangular bar cross-section were used. The grids were glow-discharged on low for 120 s (Plasma Cleaner PDC-002-CE, Harrick Plasma) to activate the nanowires. Approximately 6 nL of the complex were applied to the grids using a Chameleon EP system (SPT Labtech) at 82% relative humidity and ambient temperature.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 432130
Reported Resolution (Å) 3.1
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
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/Å2) 46.5
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 1000
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
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 3.08
IMAGE ACQUISITION EPU ?
CTF CORRECTION Gctf ?
MODEL FITTING UCSF Chimera ?
MODEL FITTING Coot ?
INITIAL EULER ASSIGNMENT RELION 3.08
FINAL EULER ASSIGNMENT RELION 3.08
CLASSIFICATION RELION 3.08
RECONSTRUCTION RELION 3.08
MODEL REFINEMENT REFMAC ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?