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Subtomogram averaging structure of cofilactin filament inside microtubule lumen of Drosophila S2 cell protrusion.
ELECTRON MICROSCOPY
Sample
Cofilactin filament inside the microtubule lumen of induced Drosophila S2 cell protrusion
Specimen Preparation
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
Point Symmetry
C1
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 iter ...
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/Å**2)
3
Imaging Experiment
1
Date of Experiment
Temperature (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
EM Software
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.