ELECTRON MICROSCOPY

Sample

DENGUE VIRUS MAJOR ENVELOPE PROTEIN E

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument ?
Cryogen Name ?
Sample Vitrification Details LIQUID NITROGEN TEMPERATURE 50MM TRIS-HCL, 75MM NACL, 1MM EDTA
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 526
Reported Resolution (Å) 24
Resolution Method ?
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details METHOD--IN THE FIRST STEP THE CRYSTAL STRUCTURE OF TBEV-E CRYSTALLOGRAPHIC DIMER (REY ET.AL., 1995 NATURELONDON) 375, 291-298) WAS ROTATED ABOUT AND TRANSLATEDAROUND AN ICOSAHEDRAL TWO FOLD AXES TO FIND THE BEST FIT. AFTER THAT THE DENSITIES AT ALL PIXELS COVERED BY THE FIRST FITTED DIMER WERE SET TO ZERO. THE SECOND DIMER WAS THAN PLACED ON A RADIAL AXIS PASSING THROUGH A POINT NEAR THE QUASI-TWOFOLD AXIS.
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 25.5
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI/PHILIPS CM200T
Minimum Defocus (nm) 790.0
Maximum Defocus (nm) 1920.0
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 ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) .
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING EMfit ?
RECONSTRUCTION OTHER ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. EACH VIRAL IMAGE WAS CTF CORRECTED BEFORE RECONSTRUCTION, BASED ON THE FOLLOWING EQUATION: F(CORR)=F(OBS)/[|CTF|+WIENER]