ELECTRON MICROSCOPY Experimental Data



EM Sample
Sample Concentration (mg/ml) 5.0
Sample pH 7.0
Sample Support Details holey carbon
Sample Vitrification Details ethane vitrification
Sample Aggregation State PARTICLE
Name of Sample Bacteriophage T4 baseplate- tail tube assembly
Sample Details Baseplate-tail tube assemblies were produced from bacteriophage T4 double amber (18-,23-) mutant
EM Data Acquisition
Date of Experiment 2001-01-30
Num of Micrographs-Images Used --
Temperature (Kelvin) 70.0
Microscope Model FEI/PHILIPS CM300FEG/T
Detector Type KODAK SO163 FILM
Minimum Defocus (nm) 1200.0
Maximum Defocus (nm) 5000.0
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) 25.0
Illumination Mode FLOOD BEAM
Nominal Magnification 45000
Calibrated Magnification 47000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details --
3D Reconstruction
Software Package(s)
Reconstruction Method model based projection matching
EM Image Reconstruction Statistics
Number of Particles 945
Nominal Pixel Size 3.11
Actual Pixel Size 2.98
Effective Resolution 12.0
CTF Correction Method CTF was corrected for each particle image individually
EM Reconstruction Magnification Callibration TMV images
Other Details a modified version of SPIDER program was used for the reconstruction
EM Map-Model Fitting and Refinement
Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Fitting Software
REAL Laplacian filtered real space Correlation Coefficient maximization -- -- situs 2.0/colores