ELECTRON MICROSCOPY Experimental Data



Virus Particulars
Virus Host Category Virus Host Species Virus Host Growth Cell Virus Type Virus Isolate ICTVDB ID
BACTERIA(EUBACTERIA) Escherichia coli slyD -- SPECIES --
EM Sample
Sample Vitrification Details --
Sample Aggregation State PARTICLE
Sample Reconstruction Method SINGLE PARTICLE
Name of Sample Procapsid of the bacteriophage alpha3
EM Data Acquisition
Date of Experiment 1998-10-16
Temperature (Kelvin) 88.0
Microscope Model FEI/PHILIPS CM200FEG/ST
Detector Type KODAK SO-163 FILM
Minimum Defocus (nm) 3200.0
Maximum Defocus (nm) 1600.0
Minimum Tilt Angle (degrees) 0.0
Maximum Tilt Angle (degrees) 0.0
Nominal CS 2.0
Imaging Mode BRIGHT FIELD
Electron Dose (electrons per Å**-2) 0.017
Illumination Mode FLOOD BEAM
Nominal Magnification 38000
Calibrated Magnification 40000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details --
3D Reconstruction
Software Package(s) EM3DR
Reconstruction Method(s) --
EM Image Reconstruction Statistics
Number of Particles 2378
Other Details 2378 particles were included in the final reconstruction. The effective resolution is 15.0-16.0A. Higher resolution was not possible because of the tendency of particles to orient themselves non-randomly. Only CA coordinates are presented in the entry.
Effective Resolution 16.0
EM Map-Model Fitting and Refinement
Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Fitting Software
REAL RIGID BODY FIT Best fit criterion used by the program EMfit is based on the average value of the density at all atomic sites in the fitted protein, the lack of atoms in negative density, and the absence of symmetry related atomic clashes. -- -- --