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Cryo-EM structure of Ca2+-free hsSlo1 channel
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6V35
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 8.169 f_angle_d 0.942 f_chiral_restr 0.055 f_bond_d 0.007 f_plane_restr 0.007
Sample Ca2+-free hsSlo1 channel
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 53961 Reported Resolution (Å) 4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C4
Map-Model Fitting and Refinement Id 1 (6V35) 2 Refinement Space REAL REAL Refinement Protocol RIGID BODY FIT AB INITIO MODEL 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) 800 Maximum Defocus (nm) 2400 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 PARTICLE SELECTION Gautomatch v0.56_sm61_cu8.0 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 MODEL REFINEMENT PHENIX 1.16
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE