ELECTRON MICROSCOPY

Sample

Human CMG, G4 stall state

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details 30 second wait time after sample application; 30 second blot time, blot force 0
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 187345
Reported Resolution (Å) 2.6
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 49.99
Fitting Procedure ?
Details Initial fitting was performed de novo by ModelAngelo, then iteratively improved with ChimeraX/ISOLDE, Coot, and Phenix real-space refinement algorithms.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 66
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 1800
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 29000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 4.0.0
IMAGE ACQUISITION SerialEM ?
CTF CORRECTION cryoSPARC 4.0.0
MODEL FITTING Coot 0.9.8.91
MODEL FITTING UCSF ChimeraX 1.7
INITIAL EULER ASSIGNMENT cryoSPARC 4.0.0
FINAL EULER ASSIGNMENT cryoSPARC 4.0.0
CLASSIFICATION cryoSPARC 4.0.0
RECONSTRUCTION cryoSPARC 4.0.0
MODEL REFINEMENT PHENIX 1.21-5207
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?