ELECTRON MICROSCOPY

Sample

Monomeric subunit of the BALF2 ssDNA-annealing filament

Specimen Preperation
Sample Aggregation State FILAMENT
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 557352
Reported Resolution (Å) 2.2
Resolution Method FSC 0.143 CUT-OFF
Other Details Local Refinement of a single subunit
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details Initial fitting was done in isolde before refinement in Phenix.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 65
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 500
Maximum Defocus (nm) 1500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Preliminary Grid screening was performed manually
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 4
IMAGE ACQUISITION EPU 3
IMAGE ACQUISITION cryoSPARC 4
CTF CORRECTION cryoSPARC 4
MODEL FITTING ISOLDE 1.3
MODEL REFINEMENT PHENIX 1.2.1
INITIAL EULER ASSIGNMENT cryoSPARC 4
FINAL EULER ASSIGNMENT cryoSPARC 4
CLASSIFICATION cryoSPARC 4
RECONSTRUCTION cryoSPARC 4
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?