ELECTRON MICROSCOPY

Sample

TubZ-Bt

Specimen Preperation
Sample Aggregation State FILAMENT
Vitrification Instrument FEI VITROBOT MARK III
Cryogen Name ETHANE
Sample Vitrification Details Add GTP to grow filaments for 6 minutes before application to grid. Blot 4.5 seconds before plunging into liquid ethane (FEI VITROBOT MARK III).
3D Reconstruction
Reconstruction Method HELICAL
Number of Particles ?
Reported Resolution (Å) 6.8
Resolution Method FSC 0.143 CUT-OFF
Other Details Final map has been low-pass filtered to 7 Angstrom and high-pass filtered to 30 Angstrom. A B-factor of -309 Angstrom was applied using the program bfactor. A cylindrical mask of radius ~80 Angstrom has been applied.
Refinement Type
Symmetry Type HELICAL
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details DETAILS--Initial local fitting was done using Chimera and then Molecular Dynamics Flexible Fitting (MDFF) was used for flexible fitting.
Data Acquisition
Detector Type TVIPS TEMCAM-F816 (8k x 8k)
Electron Dose (electrons/Å2) 20
Imaging Experiment
Date of Experiment 2011-04-22
Temprature (Kelvin)
Microscope Model FEI TECNAI F20
Minimum Defocus (nm) 800
Maximum Defocus (nm) 3500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.2
Imaging Mode BRIGHT FIELD
Specimen Holder Model OTHER
Nominal Magnification 62000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING MDFF ?
RECONSTRUCTION SPIDER ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. Whole Micrograph