ELECTRON MICROSCOPY Experimental Data



Virus Particulars
Virus Host Category Virus Host Species Virus Host Growth Cell Virus Type Virus Isolate ICTVDB ID
INVERTEBRATES Aedes aegypti mosquito C6/36 INVERTEBRATES STRAIN 00.026.0.01.013
EM Sample
Sample Concentration (mg/ml) 20.0
Sample pH 7.6
Sample Support Details Concentration is given in PFU/ML
Sample Vitrification Details SAMPLES WERE PREPARED AS THIN LAYERS OF VITREOUS ICE AND MAINTAINED AT LIQUID NITROGEN TEMPERATURE IN THE ELECTRON MICROSCOPE
Sample Aggregation State PARTICLE
Name of Sample DENGUE VIRUS
EM Data Acquisition
Date of Experiment 2000-06-27
Num of Micrographs-Images Used --
Temperature (Kelvin) 87.0
Microscope Model FEI/PHILIPS CM200T
Detector Type KODAK SO163 FILM
Minimum Defocus (nm) 800.0
Maximum Defocus (nm) 4800.0
Minimum Tilt Angle (degrees) 0.0
Maximum Tilt Angle (degrees) 0.0
Nominal CS 2.0
Imaging Mode BRIGHT FIELD
Electron Dose (electrons nm**-2) 2700.0
Illumination Mode FLOOD BEAM LOW DOSE
Nominal Magnification 50000
Calibrated Magnification --
Source SCHOTTKY FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details --
3D Reconstruction
Software Package(s)
Reconstruction Method FOURIER-BESSEL METHOD
EM Image Reconstruction Statistics
Number of Particles 1691
Nominal Pixel Size 2.8
Effective Resolution 9.5
CTF Correction Method each viral image was CTF corrected before reconstruction, based on the following equation: F(corr)=F(obs)/[|CTF|+wiener*(1-|CTF|)]
Other Details THE RECONSTRUCTION WAS COMPUTED FROM 1691 DENGUE VIRUS IMAGES THAT WERE SELECTED FROM 78 MICROGRAPHS. ORIENTATIONS WERE DETERMINED BY THE MODEL-BASED POLAR-FOURIER TRANSFORM METHOD (BAKER AND CHENG, 1996, J.STRUC.BIOL. 116,120-130) AND REFINED BY THE MODEL-BASED FOURIER TRANSFORM REFINEMENT PROCEDURE(http://bond.cs.ucf.edu/ComputationalBiology/Projects/POR/Home.html).
EM Map-Model Fitting and Refinement
Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Fitting Software
REAL -- -- -- -- EMFIT