ELECTRON MICROSCOPY

Sample

Core tetramer assembly (p2) of the phiPA3 bacteriophage PhuN protein

Specimen Preperation
Sample Aggregation State 2D ARRAY
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 29303
Reported Resolution (Å) 3.9
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details The initial model was generated using AlphaFold based on sequence alone.
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 67
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 2500
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 105000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC v2.15.0
PARTICLE SELECTION cryoSPARC v3.3.1
IMAGE ACQUISITION SerialEM v.3.6-v.3.8
MODEL FITTING Rosetta ?
MODEL FITTING UCSF ChimeraX ?
MODEL FITTING UCSF Chimera ?
MODEL REFINEMENT Rosetta ?
MODEL REFINEMENT ISOLDE 1.2.1
INITIAL EULER ASSIGNMENT cryoSPARC v2.15.0
FINAL EULER ASSIGNMENT cisTEM 1.0.0-beta
CLASSIFICATION cisTEM 1.0.0-beta
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
NONE ?