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Structure of the TRPA1 ion channel determined by electron cryo-microscopy
Sample Recombinant human TRPA1 ion channel
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK I Cryogen Name ETHANE Sample Vitrification Details Blot for 7 seconds before plunging into liquid ethane (FEI VITROBOT MARK I).
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 43585 Reported Resolution (Å) 4.24 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C4
Data Acquisition Detector Type GATAN K2 (4k x 4k) Electron Dose (electrons/Å**2) 21
Imaging Experiment 1 Date of Experiment 2014-07-18 Temperature (Kelvin) 120 Microscope Model FEI POLARA 300 Minimum Defocus (nm) 1500 Maximum Defocus (nm) 2800 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 31000 Calibrated Magnification 31000 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details Gatan K2 Summit in super-resolution counting mode. Motion correction as described in Li et al. (2013) Nature Methods.
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