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Structure of calcium-free mTMEM16A(ac)-I551A chloride channel at 3.3 A resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 5OYG
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 9.2568 f_angle_d 0.8118 f_chiral_restr 0.0494 f_plane_restr 0.0069 f_bond_d 0.0051
Sample mTMEM16A(ac)-I551A in calcium-free form
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE-PROPANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 138320 Reported Resolution (Å) 3.3 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C2
Map-Model Fitting and Refinement Id 1 (5OYG) Refinement Space REAL Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 53
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TALOS ARCTICA Minimum Defocus (nm) 500 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 49407 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION crYOLO 1.4.1 IMAGE ACQUISITION EPU 2.4 CTF CORRECTION CTFFIND 4.1.13 INITIAL EULER ASSIGNMENT RELION 3.0 FINAL EULER ASSIGNMENT RELION 3.0 CLASSIFICATION RELION 3.0 RECONSTRUCTION RELION 3.0 MODEL REFINEMENT PHENIX 1.16
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION