ELECTRON MICROSCOPY

Sample

Human poliovirus 2

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE-PROPANE
Sample Vitrification Details Single blotting with 3.5ul of sample. Four second blot time and -17 blot force on the vitrobot.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 51518
Reported Resolution (Å) 1.88
Resolution Method FSC 0.143 CUT-OFF
Other Details Final reconstruction was Ewald sphere corrected and sharpened with Post-processing in RELION using an inverse B-factor of -15.0 Angstroms. B-factor was selected ad-hoc while testing a range of values for map interpretability.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target Correlation coefficient
Overall B Value ?
Fitting Procedure ?
Details Initial model was rigid body fitted using UCSF chimera and Coot. Global minimization and B-factor refinement was performed in real space using phenix_real.space.refine.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 34.68
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 2300
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 60314
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION ETHAN ?
IMAGE ACQUISITION EPU ?
CTF CORRECTION CTFFIND 4.0
MODEL FITTING UCSF Chimera 1.14
INITIAL EULER ASSIGNMENT RELION 3.1.1
FINAL EULER ASSIGNMENT RELION 3.1.1
CLASSIFICATION RELION 3.1.1
RECONSTRUCTION RELION 3.1.1
MODEL REFINEMENT PHENIX 1.19.2-4158-000
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
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