ELECTRON MICROSCOPY

Sample

Alphavirus Replication Complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK III
Cryogen Name ETHANE
Sample Vitrification Details wait 45s, blot 2s at force -2
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 132510
Reported Resolution (Å) 2.8
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 Correlation Coefficient
Overall B Value 63.66
Fitting Procedure ?
Details ChimeraX was used to fit the 7DOP ring and built/refined using coot/phenix.
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 34
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1000
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 130000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 3.3.1
PARTICLE SELECTION Topaz 2.5.0
IMAGE ACQUISITION EPU 2.14
CTF CORRECTION cryoSPARC 3.3.1
MODEL FITTING UCSF ChimeraX 1.3
INITIAL EULER ASSIGNMENT cryoSPARC 3.3.1
FINAL EULER ASSIGNMENT cryoSPARC 3.3.1
CLASSIFICATION cryoSPARC 3.3.1
RECONSTRUCTION cryoSPARC 3.3.1
MODEL REFINEMENT PHENIX 1.2
MODEL REFINEMENT Coot 0.9.5
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?