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CryoEM single particle reconstruction of anthrax toxin protective antigen pore at 2.9 Angstrom resolution
Sample Heptamer of C-terminal 63-kDa fragment of anthrax toxin protective antigen, pore conformation Sample Components Anthrax toxin protective antigen
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Plunged into liguid nitrogen (FEI VITROBOT MARK IV).
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 60455 Reported Resolution (Å) 2.9 Resolution Method FSC 0.143 CUT-OFF Other Details (Single particle--Applied symmetry: C7) Refinement Type Symmetry Type POINT Point Symmetry C7
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) 30
Imaging Experiment 1 Date of Experiment 2014-01-08 Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1800 Maximum Defocus (nm) 5100 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 22500 Calibrated Magnification 39062 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version RECONSTRUCTION RELION
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details Each particle