ELECTRON MICROSCOPY

Sample

Filamentous muscle alpha-actin decorated with the motor domain of recombinant smooth muscle myosin II motor domain expressed in Sf9 cells

Specimen Preperation
Sample Aggregation State FILAMENT
Vitrification Instrument GATAN CRYOPLUNGE 3
Cryogen Name ETHANE
Sample Vitrification Details Some specimens were frozen manually using a homemade plunger.
3D Reconstruction
Reconstruction Method HELICAL
Number of Particles 85000
Reported Resolution (Å) 6
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type HELICAL
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value 390.86
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type DIRECT ELECTRON DE-20 (5k x 3k)
Electron Dose (electrons/Å2) 60
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 2200
Maximum Defocus (nm) 5000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
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 ?
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION Leginon ?
CTF CORRECTION CTFFIND 3.5
MODEL FITTING Rosetta ?
MODEL REFINEMENT Rosetta ?
INITIAL EULER ASSIGNMENT RELION 1.2
FINAL EULER ASSIGNMENT RELION 1.2
CLASSIFICATION RELION 1.2
RECONSTRUCTION RELION 1.2
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING ONLY ?