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The samples were incubated on the grid for 50 s and the extra solution was blotted using two Vitrobot filter papers (0.55/20 mm, Grade 595, Ted Pella) ...
The samples were incubated on the grid for 50 s and the extra solution was blotted using two Vitrobot filter papers (0.55/20 mm, Grade 595, Ted Pella) for 4 s at 0 blot force. The grids were plunged into liquid ethane at ~180 degrees C with a wait time of 0.5 s.
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
200000
Reported Resolution (Å)
3.2
Resolution Method
FSC 0.143 CUT-OFF
Other Details
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/Å**2)
51.4
Imaging Experiment
1
Date of Experiment
Temperature (Kelvin)
Microscope Model
FEI TITAN KRIOS
Minimum Defocus (nm)
1200
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
64000
Calibrated Magnification
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
300
Imaging Details
The vitrified grids were screened for sample homogeneity and ice thickness in a Glacios 200 kV transmission electron microscope equipped with Gatan K2 summit camera. Electron micrographs for image reconstructions were collected using Titan Krios equipped with X-cold field emission gun at 300 kV, Gatan image filter with slit width of 20 eV and a nanoprobe.