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 |
|---|
| bacterial flagellar hook |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | FILAMENT |
| Vitrification Instrument | FEI VITROBOT MARK I |
| Cryogen Name | HELIUM |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| 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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | TVIPS TEMCAM-F415 (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 20 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| 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 | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| each images | ||||
