ELECTRON MICROSCOPY

Sample

Hexameric DNA replicative helicase Vc-DnaB in complex with ssDNA, ATPgammaS and Mg2+

Specimen Preperation
Sample Aggregation State 3D ARRAY
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 551305
Reported Resolution (Å) 3.37
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 73.05
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 51.37
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 700
Maximum Defocus (nm) 2900
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 81000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 3.3.2
IMAGE ACQUISITION Leginon ?
CTF CORRECTION cryoSPARC 3.3.2
MODEL FITTING MOLREP 11.9.02
INITIAL EULER ASSIGNMENT cryoSPARC 3.3.2
FINAL EULER ASSIGNMENT cryoSPARC 3.3.2
CLASSIFICATION cryoSPARC 3.3.2
RECONSTRUCTION cryoSPARC 3.3.2
MODEL REFINEMENT PHENIX 1.21.1-5286-0000
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?