ELECTRON MICROSCOPY

Sample

Pre-accommodated ribosomal trans-translation complex: T. thermophilus 70S-mRNA-(P-site tRNA)-tmRNA-(SmpB)2-(EF-Tu)-GDP-kirromycin

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK I
Cryogen Name ETHANE
Sample Vitrification Details Blot for 5 seconds before plunging. Rapid plunge freezing in liquid ethane.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 52829
Reported Resolution (Å) 13.6
Resolution Method ?
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol OTHER
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details METHOD--manual fitting using stereo visualization REFINEMENT PROTOCOL--Manual
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 15
Imaging Experiment
Date of Experiment 2004-06-01
Temprature (Kelvin)
Microscope Model FEI TECNAI F20
Minimum Defocus (nm) 1475
Maximum Defocus (nm) 3635
Minimum Tilt Angle (degrees) 0
Maximum Tilt Angle (degrees) 0
Nominal CS 2
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification 55000
Calibrated Magnification 49000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING O ?
RECONSTRUCTION SPIDER ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. CTF correction of each defocus group reconstruction, by Wiener filtering
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