ELECTRON MICROSCOPY

Sample

Type I poliovirus (Mahoney) in complex with enzymatically deglycosylated 3-ecto-domain receptor (PVR, CD155)

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details Sample mixed and frozen within 2 minutes before plunging into liquid ethane.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 9248
Reported Resolution (Å) 4.0
Resolution Method FSC 0.143 CUT-OFF
Other Details (Single particle--Applied symmetry: I)
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space RECIPROCAL
Refinement Protocol FLEXIBLE FIT
Refinement Target pseudo-real space
Overall B Value ?
Fitting Procedure ?
Details REFINEMENT PROTOCOL--flexible DETAILS--After rigid-body fitting, manual rebuilding of the model was alternated with automated stereochemically restrained refinement, minimizing the discrepancy between the experimental and model-based Fourier amplitudes and phases.
Data Acquisition
Detector Type GATAN K2 (4k x 4k)
Electron Dose (electrons/Å2) 25
Imaging Experiment
Date of Experiment 2013-11-01
Temprature (Kelvin)
Microscope Model FEI POLARA 300
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 3000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.26
Imaging Mode BRIGHT FIELD
Specimen Holder Model OTHER
Nominal Magnification 27500
Calibrated Magnification 25355
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details K2 Summit super-resolution mode used
Imaging Experiment
Task Software Package Version
MODEL FITTING Coot ?
MODEL FITTING REFMAC 5
MODEL FITTING SPDBV ?
RECONSTRUCTION FREALIGN ?
RECONSTRUCTION RELION 1.2
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. per micrograph