4V6T
Structure of the bacterial ribosome complexed by tmRNA-SmpB and EF-G during translocation and MLD-loading
ELECTRON MICROSCOPY
Sample |
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Ribosomal complex 70S-tmRNA-SmpB-tRNA-EFG-GDP-FA |
Specimen Preparation | |
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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 | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 68843 |
Reported Resolution (Å) | 8.3 |
Resolution Method | |
Other Details | |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Data Acquisition | |||||||||
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Detector Type | KODAK SO-163 FILM | ||||||||
Electron Dose (electrons/Å**2) | 20 |
Imaging Experiment | 1 |
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Date of Experiment | 2009-12-08 |
Temperature (Kelvin) | 77 |
Microscope Model | FEI POLARA 300 |
Minimum Defocus (nm) | 2500 |
Maximum Defocus (nm) | 5000 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | 2 |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | |
Nominal Magnification | 39000 |
Calibrated Magnification | 39000 |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
EM Software | ||
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Task | Software Package | Version |
MODEL FITTING | UCSF Chimera | |
RECONSTRUCTION | SPIDER |
Image Processing | ||||
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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 |