ELECTRON MICROSCOPY

Sample

Fiberless isometric phi29 capsid

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details frozen in liquid ethane
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 5922
Reported Resolution (Å) 7.9
Resolution Method ?
Other Details Software used included P3DR (3D reconstructions), PFT (initial orientation improvement), and POR (final orientation refinement.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target rigid body refinement in real space against laplacian filtered EM density, using the program COLORES in the package SITUS. Each molecule in the T=3 asymmetric unit was refined separately.
Overall B Value ?
Fitting Procedure ?
Details METHOD--6D search for each symmetry related molecule in the icosahedral asymmetric unit REFINEMENT PROTOCOL--rigid body
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 20
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI/PHILIPS CM200FEG/ST
Minimum Defocus (nm) 700
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 38000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING EMfit ?
MODEL FITTING SITUS COLORES ?
MODEL FITTING SITUS COLORES ?
RECONSTRUCTION EM3DR ?
RECONSTRUCTION PFT ?
RECONSTRUCTION POR ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. Inverse of CTF was applied to images. Both phases and amplitudes were corrected.
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