ELECTRON MICROSCOPY

Sample

Protofilament from ciliary microtubule doublet

Specimen Preperation
Sample Aggregation State FILAMENT
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Blot force 3 for 5 seconds
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 23
Reported Resolution (Å) 4.6
Resolution Method FSC 0.143 CUT-OFF
Other Details 23 boxes of the protofilament are boxed out from the doublet map (EMD-8528), aligned and averaged using subtomogram averaging software.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol BACKBONE TRACE
Refinement Target minimization global
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type FEI FALCON II (4k x 4k)
Electron Dose (electrons/Å2) 45
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1200
Maximum Defocus (nm) 3800
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 59000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION E2helixboxer 2
IMAGE ACQUISITION EPU 1.6
CTF CORRECTION CTFFIND4 ?
MODEL FITTING UCSF Chimera ?
MODEL REFINEMENT PHENIX ?
INITIAL EULER ASSIGNMENT MATLAB ?
FINAL EULER ASSIGNMENT AV3 ?
RECONSTRUCTION AV3 ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?