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Structural Plasticity of Helical Nanotubes Based on Coiled-Coil Assemblies
Sample Helical nanotube formed from a 29-residue peptide
Specimen Preparation Sample Aggregation State HELICAL ARRAY 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) 3.6 Resolution Method OTHER Other Details Both FSC and comparison with atomic model used for resolution determination. Refinement Type Symmetry Type HELICAL Axial Symmetry C1 Axial Rise 2.2 Angular Rotation 87.1
Data Acquisition Detector Type FEI FALCON II (4k x 4k) Electron Dose (electrons/Å**2) 10
Imaging Experiment 1 Date of Experiment 2013-08-01 Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1400 Maximum Defocus (nm) 4400 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version RECONSTRUCTION SPIDER
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details micrographs multiplied by CTF