1ML5
Structure of the E. coli ribosomal termination complex with release factor 2
ELECTRON MICROSCOPY
Sample |
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release factor RF2 bound to E. coli ribosomes |
Sample Components |
peptide release factor RF2 |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | HOMEMADE PLUNGER |
Cryogen Name | ETHANE |
Sample Vitrification Details | holey carbon grid at 20C; flash frozen into liquid ethan |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 15800 |
Reported Resolution (Å) | 14 |
Resolution Method | |
Other Details | iterative refinement procedure as described in Quat. Rev. of Biophysics 33, 4 (2000), pp. 307-369 |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Map-Model Fitting and Refinement | |||||
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Id | 1 (1GQE, 1GIX, 1GIY) | ||||
Refinement Space | REAL | ||||
Refinement Protocol | RIGID BODY FIT | ||||
Refinement Target | best visual fit using the program O | ||||
Overall B Value | |||||
Fitting Procedure | |||||
Details | REFINEMENT PROTOCOL--rigid body fit of the 70S ribosome without individual fitting of proteins or RNA fragments. Rigid body fit of three individual ... |
Data Acquisition | |||||||||
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Detector Type | KODAK SO-163 FILM | ||||||||
Electron Dose (electrons/Å**2) | 10 |
Imaging Experiment | 1 |
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Date of Experiment | 2001-09-06 |
Temperature (Kelvin) | 100 |
Microscope Model | FEI/PHILIPS CM200FEG/ST |
Minimum Defocus (nm) | 500 |
Maximum Defocus (nm) | 2900 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | 2.1 |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | |
Nominal Magnification | 50000 |
Calibrated Magnification | 48000 |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 200 |
Imaging Details | low dose mode |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
phase flipping CTF correction of each particle as function of position in the micrograph |