ELECTRON MICROSCOPY
Refinement
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 4.767 |
| f_angle_d | 0.706 |
| f_chiral_restr | 0.046 |
| f_bond_d | 0.004 |
| f_plane_restr | 0.004 |
| Sample |
|---|
| Neuro2a expressing Q150-GFP aggregate |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE-PROPANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 43227 |
| Reported Resolution (Å) | 3.9 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C2 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | |||||
| Refinement Protocol | |||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | FEI FALCON IV (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 2 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | TFS KRIOS |
| Minimum Defocus (nm) | 3000 |
| Maximum Defocus (nm) | 5000 |
| 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 | |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details | For dataset 2, 410 tilt series were collected on a Titan Krios G4 instrument at 300 kV equipped with a Selectris X energy filter operating at zero-loss with a slit width of 10 eV, and a Falcon 4i camera (Thermo). Low-magnification images were taken at 11500x (object pixel size 2.13 nm) to generate lamella overviews. Tilt series were recorded at 1.89 A pixel size using the Tomography 5 (Thermo) in EER file format, with a dose-symmetric tilt scheme. The tilt series were collected with a 3 degree tilt increment with an angular range of ~120 degrees, and with cumulative dose of 80-120 electrons/A^2. Targeted defocus was in the range of -5 to -3 um. |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | FEI tomography | 9.03 |
| MODEL REFINEMENT | PHENIX | |
| RECONSTRUCTION | RELION | 4.0 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| NONE | ||||
