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Cryo-EM structure of the zebrafish two pore domain K+ channel TREK1 (K2P2.1) in DDM/POPA mixed micelles
Sample Potassium channel subfamily K member 2
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 303950 Reported Resolution (Å) 2.82 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 63.32
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1300 Maximum Defocus (nm) 1800 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 105000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.1.2 IMAGE ACQUISITION Leginon CTF CORRECTION CTFFIND 4 CTF CORRECTION RELION 3.1.2 MODEL FITTING UCSF Chimera 1.14.0 MODEL FITTING Coot 0.8.9.1 INITIAL EULER ASSIGNMENT RELION 3.1.2 FINAL EULER ASSIGNMENT RELION 3.1.2 RECONSTRUCTION RELION 3.1.2 MODEL REFINEMENT PHENIX 1.19.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 492284