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Structure of bare actin filament, backbone-averaged with sidechains truncated to alanine
ELECTRON MICROSCOPY
Sample
Bare actin filament
Specimen Preparation
Sample Aggregation State
FILAMENT
Vitrification Instrument
LEICA EM GP
Cryogen Name
ETHANE
Sample Vitrification Details
Sample was applied to a glow-discharged holey carbon grid, incubated for 60 seconds, and blotted for 3 seconds from the backside with filter paper.
3D Reconstruction
Reconstruction Method
HELICAL
Number of Particles
63139
Reported Resolution (Å)
7.5
Resolution Method
FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type
HELICAL
Axial Symmetry
C1
Axial Rise
28.11
Angular Rotation
-166.65
Map-Model Fitting and Refinement
Id
1
Refinement Space
REAL
Refinement Protocol
FLEXIBLE FIT
Refinement Target
Overall B Value
350
Fitting Procedure
Details
Atomistic model was backbone-averaged in Phenix; side chains were truncated to alanine. This treatment has resulted in the errors noted in the asso ...
Atomistic model was backbone-averaged in Phenix; side chains were truncated to alanine. This treatment has resulted in the errors noted in the associated caveats.
Data Acquisition
Detector Type
GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)
1.5
Imaging Experiment
1
Date of Experiment
Temperature (Kelvin)
Microscope Model
FEI TECNAI 20
Minimum Defocus (nm)
1500
Maximum Defocus (nm)
3000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
2
Imaging Mode
BRIGHT FIELD
Specimen Holder Model
GATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER