3A69
Atomic model of the bacterial flagellar hook based on docking an X-ray derived structure and terminal two alpha-helices into an 7.1 angstrom resolution cryoEM map
ELECTRON MICROSCOPY
Sample |
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bacterial flagellar hook |
Specimen Preparation | |
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Sample Aggregation State | FILAMENT |
Vitrification Instrument | FEI VITROBOT MARK I |
Cryogen Name | HELIUM |
Sample Vitrification Details |
3D Reconstruction | |
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Reconstruction Method | HELICAL |
Number of Particles | |
Reported Resolution (Å) | 7.1 |
Resolution Method | |
Other Details | a modified version of SPIDER program was used for the reconstruction |
Refinement Type | |
Symmetry Type | HELICAL |
Data Acquisition | |||||||||
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Detector Type | TVIPS TEMCAM-F415 (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 20 |
Imaging Experiment | 1 |
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Date of Experiment | 2008-02-20 |
Temperature (Kelvin) | 50 |
Microscope Model | JEOL 3200FSC |
Minimum Defocus (nm) | 500 |
Maximum Defocus (nm) | 2000 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | 1.6 |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | JEOL |
Nominal Magnification | 50000 |
Calibrated Magnification | 89285 |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 200 |
Imaging Details |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
each images |