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Atomic structures of a bactericidal contractile nanotube in its pre- and post-contraction states
Sample Pyocin (post-contraction) sheath
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Blot for 4 seconds (blot force 1) before plunging into liquid ethane (FEI VITROBOT MARK IV).
3D Reconstruction Reconstruction Method HELICAL Number of Particles Reported Resolution (Å) 3.9 Resolution Method OTHER Other Details Model-Map FSC (Helical Details: Relion-based IHRSR) Refinement Type Symmetry Type HELICAL Axial Symmetry C6 Axial Rise 16.2 Angular Rotation 33.1
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type KODAK SO-163 FILM Electron Dose (electrons/Å**2) 25
Imaging Experiment 1 Date of Experiment 2009-10-07 Temperature (Kelvin) 80 Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1600 Maximum Defocus (nm) 2500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 59000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details Scanned with 9200 ED
EM Software Task Software Package Version RECONSTRUCTION IHRSR RECONSTRUCTION RELION
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details Each particle