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CryoEM structure of a type VI secretion system
Sample Contracted T6SS sheath Sample Components IglA IglB
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Plunged into liquid ethane (FEI VITROBOT MARK IV)
3D Reconstruction Reconstruction Method HELICAL Number of Particles Reported Resolution (Å) 3.7 Resolution Method FSC 0.143 CUT-OFF Other Details (Helical Details: Relion-based IHRSR) Refinement Type Symmetry Type HELICAL Axial Symmetry C6 Axial Rise 20.8 Angular Rotation 33.4
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 (4k x 4k) Electron Dose (electrons/Å**2) 25
Imaging Experiment 1 Date of Experiment 2014-03-01 Temperature (Kelvin) 80 Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1500 Maximum Defocus (nm) 3500 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 29000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details K2 Summit in Counting mode
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