4V7B
Visualization of two tRNAs trapped in transit during EF-G-mediated translocation
ELECTRON MICROSCOPY
Sample |
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ribosomal 70S-EF-G complex |
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 MARK I) |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 279309 |
Reported Resolution (Å) | 6.8 |
Resolution Method | FSC 0.5 CUT-OFF |
Other Details | (Single particle--Applied symmetry: C1) |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Map-Model Fitting and Refinement | |||||
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Id | 1 (4KIY) | ||||
Refinement Space | REAL | ||||
Refinement Protocol | RIGID BODY FIT | ||||
Refinement Target | |||||
Overall B Value | |||||
Fitting Procedure | |||||
Details | REFINEMENT PROTOCOL--rigid body |
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 | 2010-06-14 |
Temperature (Kelvin) | 77 |
Microscope Model | FEI POLARA 300 |
Minimum Defocus (nm) | 2000 |
Maximum Defocus (nm) | 5000 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | GATAN HELIUM |
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 906 individual images per group. |