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The sample was applied onto glow-discharged (30 sec, 20 mA) C-flat (Protochips Inc.) multihole grids. The grids were blotted from the back side for 11 ...
The sample was applied onto glow-discharged (30 sec, 20 mA) C-flat (Protochips Inc.) multihole grids. The grids were blotted from the back side for 11 seconds at room temperature in a chamber at 85% humidity and plunge-frozen into liquid ethane using a manual plunger.
3D Reconstruction
Reconstruction Method
SUBTOMOGRAM AVERAGING
Number of Particles
38498
Reported Resolution (Å)
9.2
Resolution Method
FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type
POINT
Point Symmetry
C1
Map-Model Fitting and Refinement
Id
1
Refinement Space
REAL
Refinement Protocol
FLEXIBLE FIT
Refinement Target
Cross-correlation coefficient
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector Type
GATAN K2 QUANTUM (4k x 4k)
Electron Dose (electrons/Å**2)
2
Imaging Experiment
1
Date of Experiment
Temperature (Kelvin)
Microscope Model
FEI TITAN KRIOS
Minimum Defocus (nm)
2500
Maximum Defocus (nm)
5000
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
Calibrated Magnification
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
300
Imaging Details
Tomographic tilt series were acquired with the dose-symmetric tilt-scheme (Hagen et al., J Struct Biol. 2017)
EM Software
Task
Software Package
Version
VOLUME SELECTION
Amira
IMAGE ACQUISITION
SerialEM
CTF CORRECTION
CTFFIND
4
MODEL FITTING
MDFF
RECONSTRUCTION
TOM Toolbox
VOLUME SELECTION
TOM Toolbox
CTF CORRECTION
IMOD
RECONSTRUCTION
AV3
Image Processing
CTF Correction Type
CTF Correction Details
Number of Particles Selected
Particle Selection Details
PHASE FLIPPING ONLY
CTF-determination for each individual tilt image was performed using CTFFIND4. Strip-based CTF-correction and tomogram reconstruction was performed in Imod.