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3.6 Angstrom resolution MAVS filament generated from helical reconstruction
ELECTRON MICROSCOPY
Refinement
RMS Deviations
Key
Refinement Restraint Deviation
f_dihedral_angle_d
14.668
f_angle_d
1.257
f_chiral_restr
0.051
f_bond_d
0.007
f_plane_restr
0.005
Sample
MAVS filament
Specimen Preparation
Sample Aggregation State
FILAMENT
Vitrification Instrument
FEI VITROBOT MARK I
Cryogen Name
NITROGEN
Sample Vitrification Details
Plunged in liquid nitrogen (FEI VITROBOT MARK I)
3D Reconstruction
Reconstruction Method
HELICAL
Number of Particles
Reported Resolution (Å)
3.64
Resolution Method
FSC 0.5 CUT-OFF
Other Details
The electron density map of the filament was reconstructed using a helical geometrically constrained reconstruction approach (Helicon).
Refinement Type
Symmetry Type
HELICAL
Axial Symmetry
C1
Axial Rise
5.13
Angular Rotation
101.1
Map-Model Fitting and Refinement
Id
1
Refinement Space
RECIPROCAL
Refinement Protocol
RIGID BODY FIT
Refinement Target
Cross-correlation coefficient
Overall B Value
136.08
Fitting Procedure
Details
METHOD--local refinement REFINEMENT PROTOCOL--rigid body with TLS
Data Acquisition
Detector Type
GATAN K2 (4k x 4k)
Electron Dose (electrons/Å**2)
31
Imaging Experiment
1
Date of Experiment
2013-08-10
Temperature (Kelvin)
Microscope Model
FEI TECNAI F20
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode
BRIGHT FIELD
Specimen Holder Model
GATAN LIQUID NITROGEN
Nominal Magnification
29000
Calibrated Magnification
40410
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
200
Imaging Details
Movies were recorded at liquid nitrogen temperature with a K2 Summit direct detector device camera operated in super-resolution mode with dose-fractionation.