ELECTRON MICROSCOPY

Sample

Cofilactin filament inside the microtubule lumen of induced Drosophila S2 cell protrusion

Specimen Preperation
Sample Aggregation State FILAMENT
Vitrification Instrument FEI VITROBOT MARK III
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SUBTOMOGRAM AVERAGING
Number of Particles 3801
Reported Resolution (Å) 16.5
Resolution Method FSC 0.143 CUT-OFF
Other Details helical symmetry (-162 twist, 29A rise) was applied during 3D classification but not during refinements.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details Drosophila cofilin and actin structures were predicted as a complex with Alphafold 2-Multimer. Actin from the predicted cofilin-actin complex was iteratively aligned with 8 actin subunits in the chicken cofilactin PDB model 5yU8. Two cofilin moieties at the pointed end were removed. Side chains were truncated. The model was not refined.
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 3
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 2500
Maximum Defocus (nm) 6000
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
IMAGE ACQUISITION SerialEM 4.1.0beta
CLASSIFICATION RELION 3.1
RECONSTRUCTION RELION 3.1
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION CTF estimation was performed in WARP. CTF correction was performed in Relion 3.1.
Feedback Form
Name
Email
Institute
Feedback