ELECTRON MICROSCOPY

Sample

N. gonorrhoeae Type IV pili

Specimen Preperation
Sample Aggregation State FILAMENT
Vitrification Instrument FEI VITROBOT MARK I
Cryogen Name ETHANE
Sample Vitrification Details 5 ul of sample were applied to grids for 1 minute, blotted for 2.5 seconds then plunge-frozen in liquid ethane using an FEI Vitrobot
3D Reconstruction
Reconstruction Method HELICAL
Number of Particles 25000
Reported Resolution (Å) 12.5
Resolution Method ?
Other Details ?
Refinement Type
Symmetry Type HELICAL
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target real-space density correlation coefficient
Overall B Value ?
Fitting Procedure ?
Details METHOD--CoAn REFINEMENT PROTOCOL--rigid body
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 10
Imaging Experiment
Date of Experiment 2004-06-23
Temprature (Kelvin)
Microscope Model FEI/PHILIPS CM200FEG
Minimum Defocus (nm) 1100
Maximum Defocus (nm) 2500
Minimum Tilt Angle (degrees) 0
Maximum Tilt Angle (degrees) 0
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model .
Nominal Magnification 50000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 120
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING CoAn ?
RECONSTRUCTION IHRSR ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. Wiener filter
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