ELECTRON MICROSCOPY

Sample

Ribosome-channel complexes

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details Home-made plunger
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 79000
Reported Resolution (Å) 8.7
Resolution Method ?
Other Details 8.7 angstrom resolution for the 80S ribosome, 11.1 angstrom resolution for the Sec61 region of the channel density
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details METHOD--Rigid body, then local flexible fitting
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 15
Imaging Experiment
Date of Experiment 2001-07-27
Temprature (Kelvin)
Microscope Model FEI TECNAI F20
Minimum Defocus (nm) 500
Maximum Defocus (nm) 3000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification 50000
Calibrated Magnification 51000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING Coot ?
MODEL FITTING UCSF Chimera ?
RECONSTRUCTION EMAN ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. per micrograph