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Structure of calcium-bound mTMEM16A(ac)-I551A chloride channel at 4.1 A resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 5OYB
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 7.7918 f_angle_d 0.9079 f_chiral_restr 0.0569 f_plane_restr 0.0078 f_bond_d 0.0063
Sample mTMEM16A(ac)-I551A in calcium-bound 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 34234 Reported Resolution (Å) 4.1 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C2
Map-Model Fitting and Refinement Id 1 (5OYB) 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 cryoSPARC 2.15 FINAL EULER ASSIGNMENT RELION 3.0 CLASSIFICATION cryoSPARC 2.15 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