ELECTRON MICROSCOPY

Sample

POLIOVIRUS 135S CELL ENTRY INTERMEDIATE

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument ?
Cryogen Name ETHANE
Sample Vitrification Details Plunge freezing into liquid ethane
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 3641
Reported Resolution (Å) 11
Resolution Method ?
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space RECIPROCAL
Refinement Protocol RIGID BODY FIT
Refinement Target amplitude-weighted phase error, and the summation of the squared model-based amplitudes.
Overall B Value ?
Fitting Procedure ?
Details METHOD--gradient search REFINEMENT PROTOCOL--Rigid body (chains 1 and 6 as one rigid body, chains 3 and 7 as one rigid body, chains 2 and 8 as individual rigid bodies, chain 5 placed along 5fold axis visually)
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 1
Imaging Experiment
Date of Experiment 2002-09-17
Temprature (Kelvin)
Microscope Model FEI TECNAI F20
Minimum Defocus (nm) 900
Maximum Defocus (nm) 3000
Minimum Tilt Angle (degrees) 0.0
Maximum Tilt Angle (degrees) 0.0
Nominal CS 2.0
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification 50000
Calibrated Magnification 50000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details Focal pairs were taken
Imaging Experiment
Task Software Package Version
MODEL FITTING INSOUT ?
RECONSTRUCTION EM3DR ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. CTF correction of each particle. Phase flipped correction for particles included in the orientation search, and deconvoluted and gaussian decay corrected for the particles used in the reconstruction