3J9O
CryoEM structure of a type VI secretion system
ELECTRON MICROSCOPY
| Sample |
|---|
| Contracted T6SS sheath |
| Sample Components |
| IglA |
| IglB |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | FILAMENT |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Plunged into liquid ethane (FEI VITROBOT MARK IV) |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | HELICAL |
| Number of Particles | |
| Reported Resolution (Å) | 3.7 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | (Helical Details: Relion-based IHRSR) |
| Refinement Type | |
| Symmetry Type | HELICAL |
| Axial Symmetry | C6 |
| Axial Rise | 20.8 |
| Angular Rotation | 33.4 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | |||||
| Refinement Protocol | |||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 25 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | 2014-03-01 |
| Temperature (Kelvin) | 80 |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 1500 |
| Maximum Defocus (nm) | 3500 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.7 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
| Nominal Magnification | 29000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details | K2 Summit in Counting mode |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| RECONSTRUCTION | IHRSR | |
| RECONSTRUCTION | RELION | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| each particle | ||||
