ELECTRON MICROSCOPY

Sample

Cryo-EM structure of the Mycobacterium smegmatis DNA integrity scanning protein (MsDisA).

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details blotted for 3.5s
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 204932
Reported Resolution (Å) 3.1
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 OTHER
Refinement Target ?
Overall B Value 138.7
Fitting Procedure ?
Details Model from AlphaFold was used as the starting point (AF-A0R564-F1-model_v2.pdb).
Data Acquisition
Detector Type FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å2) 27.75
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 2100
Maximum Defocus (nm) 3300
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 75000
Calibrated Magnification 130841
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 3.0
IMAGE ACQUISITION EPU ?
MODEL FITTING Coot 0.9.5
MODEL FITTING UCSF Chimera 1.15
INITIAL EULER ASSIGNMENT cryoSPARC 3.0
FINAL EULER ASSIGNMENT cryoSPARC 3.0
RECONSTRUCTION cryoSPARC 3.0
MODEL REFINEMENT PHENIX 1.19
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?