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Cryo-EM structure of Ca2+-free hsSlo1-beta4 channel complex
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6V22
Sample hsSlo1 alpha subunit-beta4 subunit complex
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Blot for 4 seconds before plunging.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 42842 Reported Resolution (Å) 3.5 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C4
Map-Model Fitting and Refinement Id 1 (6V22) Refinement Space REAL Refinement Protocol OTHER Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 89
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 700 Maximum Defocus (nm) 2000 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 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION SerialEM CTF CORRECTION Gctf 1.06 MODEL FITTING UCSF Chimera 1.13.1 MODEL FITTING Coot 0.8.9.2 INITIAL EULER ASSIGNMENT cryoSPARC 2.9.0 FINAL EULER ASSIGNMENT FREALIGN 9.11 CLASSIFICATION RELION 3.0.8 RECONSTRUCTION FREALIGN 9.11 MODEL REFINEMENT PHENIX 1.16
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE