9ATW
Structure of biofilm-forming functional amyloid PSMa1 from Staphylococcus aureus
ELECTRON MICROSCOPY
| Sample |
|---|
| Phenol Soluble Modulin alpha1 (PSMAlpha1) (PSMa1) |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | FILAMENT |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE-PROPANE |
| Sample Vitrification Details | plunge-frozen in liquid ethane using a Vitrobot Mark IV plunge freezer with a blot force of zero at 4C and 99% humidity. |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | HELICAL |
| Number of Particles | 100 |
| Reported Resolution (Å) | 3.5 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | The overall resolution estimated by CryoSPARC was 3.51A according to the gold standard Fourier shell correlation cutoff at 0.143. The final map was sh ... |
| Refinement Type | |
| Symmetry Type | HELICAL |
| Axial Symmetry | C2 |
| Axial Rise | 4.95 |
| Angular Rotation | -3.578 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | |||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | |||||
| Overall B Value | 50 | ||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 63 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 500 |
| Maximum Defocus (nm) | 1500 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
| Nominal Magnification | 130000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | EPU | v2.7 |
| CTF CORRECTION | cryoSPARC | 4.1 |
| MODEL FITTING | UCSF ChimeraX | 1.8 |
| INITIAL EULER ASSIGNMENT | cryoSPARC | 4.1 |
| FINAL EULER ASSIGNMENT | cryoSPARC | 4.1 |
| CLASSIFICATION | cryoSPARC | 4.1 |
| RECONSTRUCTION | cryoSPARC | 4.1 |
| MODEL REFINEMENT | PHENIX | 1.20 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||
