ELECTRON MICROSCOPY

Sample

Thioferritin dodecamer with loaded ferroxidase centers and no mineral core.

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 2583454
Reported Resolution (Å) 1.86
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 RIGID BODY FIT
Refinement Target Cross-correlation coefficient
Overall B Value 63.2
Fitting Procedure ?
Details Model was fit to map using ChimeraX fitmap, and then refined in PHENIX
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 55
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TALOS ARCTICA
Minimum Defocus (nm) 600
Maximum Defocus (nm) 1600
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 57000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 4.5
PARTICLE SELECTION crYOLO ?
IMAGE ACQUISITION SerialEM 4.1
CTF CORRECTION cryoSPARC 4.5
MODEL FITTING UCSF ChimeraX 1.8
INITIAL EULER ASSIGNMENT cryoSPARC 4.5
FINAL EULER ASSIGNMENT cryoSPARC 4.5
CLASSIFICATION cryoSPARC 4.5
RECONSTRUCTION cryoSPARC 4.5
MODEL REFINEMENT PHENIX 1.21
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?