ELECTRON MICROSCOPY

Sample

Ribosomal complex 70S-tmRNA-SmpB-tRNA-EFG-GDP-FA

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK I
Cryogen Name ETHANE
Sample Vitrification Details blot for 5-10 seconds before plunging into liquid ethane (FEI Vitrobot)
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 68843
Reported Resolution (Å) 8.3
Resolution Method ?
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 20
Imaging Experiment
Date of Experiment 2009-12-08
Temprature (Kelvin)
Microscope Model FEI POLARA 300
Minimum Defocus (nm) 2500
Maximum Defocus (nm) 5000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.0
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification 39000
Calibrated Magnification 39000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING UCSF Chimera ?
RECONSTRUCTION SPIDER ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. The volumes were CTF-corrected in defocus groups, with an average of approximately 215 individual images per group