4V68
T. thermophilus 70S ribosome in complex with mRNA, tRNAs and EF-Tu.GDP.kirromycin ternary complex, fitted to a 6.4 A Cryo-EM map.
ELECTRON MICROSCOPY
Sample |
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Thermus thermophilus ribosome complexed with mRNA, tRNAs and EF-Tu |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | FEI VITROBOT MARK I |
Cryogen Name | METHANE |
Sample Vitrification Details | A Vitrobot was used to shock-freeze the sample in liquid methane. |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 323688 |
Reported Resolution (Å) | 6.4 |
Resolution Method | |
Other Details | The SPIDER software package was used. |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Map-Model Fitting and Refinement | |||||
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Id | 1 | ||||
Refinement Space | REAL | ||||
Refinement Protocol | RIGID BODY FIT | ||||
Refinement Target | best visual fit using the programs O, CHIMERA or PYMOL. | ||||
Overall B Value | |||||
Fitting Procedure | |||||
Details | REFINEMENT PROTOCOL--rigid body docking carried out with SPIDER or SITUS software. |
Data Acquisition | |||||||||
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Detector Type | KODAK SO-163 FILM | ||||||||
Electron Dose (electrons/Å**2) | 23 |
Imaging Experiment | 1 |
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Date of Experiment | |
Temperature (Kelvin) | 77 |
Microscope Model | FEI POLARA 300 |
Minimum Defocus (nm) | 1500 |
Maximum Defocus (nm) | 4500 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | |
Nominal Magnification | 39000 |
Calibrated Magnification | |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
CTF correction of each defocus group volume prior to back projection. |