ELECTRON MICROSCOPY

Sample

Escherichia phage T4

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Ted Pella lacey carbon 400 mesh grids (catalog No: 01824) were used.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 69000
Reported Resolution (Å) 3.8
Resolution Method FSC 0.143 CUT-OFF
Other Details This is the composite map based on the asymmetric reconstruction focused on the phage neck, the 3-fold-symmetric reconstruction focused on the middle part of the tail, and the 3-fold-symmetric reconstruction focused on the baseplate. The resolutions of these reconstructions are 3.8A, 3.4A and 3.6A, respectively. (The number of particles is given for the asymmetric reconstruction focused on the phage neck.)
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details The structures were fitted into the composite map using ChimeraX.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 38
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 600
Maximum Defocus (nm) 2000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
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