ELECTRON MICROSCOPY

Sample

Mouse otoferlin (residues 216-1931) in the lipid-free, Ca2+-bound state

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE-PROPANE
Sample Vitrification Details After the application of ~3 uL sample (A280~0.42), the grid was blotted for 9 s with a blot force of 3, then plunged into liquid ethane/propane cooled by liquid nitrogen.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 91966
Reported Resolution (Å) 3.43
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol AB INITIO MODEL
Refinement Target ?
Overall B Value 113.2
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type FEI FALCON IV (4k x 4k)
Electron Dose (electrons/Å2) 38.13
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 1100
Maximum Defocus (nm) 2300
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 165000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC v.4.7
IMAGE ACQUISITION EPU v.3.6
CTF CORRECTION cryoSPARC v.4.7
MODEL FITTING UCSF ChimeraX v.1.8
INITIAL EULER ASSIGNMENT cryoSPARC v.4.7
FINAL EULER ASSIGNMENT RELION v.5.0
CLASSIFICATION RELION v.5.0
RECONSTRUCTION RELION v.5.0
MODEL REFINEMENT PHENIX 1.21.2_5419
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?