8P28
Cryo-EM structure of the anaerobic ribonucleotide reductase from Prevotella copri in its tetrameric, dATP-bound state
ELECTRON MICROSCOPY
| Sample |
|---|
| Anaerobic ribonucleotide reductase from Prevotella copri in its tetrameric, dATP-bound state |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | blot force 1, 5s blot time |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 1349133 |
| Reported Resolution (Å) | 2.77 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | Non-uniform refinement in cryoSPARC |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C2 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | correlation coefficient | ||||
| Overall B Value | 45 | ||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 46 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | TFS KRIOS |
| Minimum Defocus (nm) | 1000 |
| Maximum Defocus (nm) | 3400 |
| 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 | 105000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | cryoSPARC | 3.2.0 |
| IMAGE ACQUISITION | EPU | 2.8.1 |
| CTF CORRECTION | cryoSPARC | 3.2.0 |
| MODEL FITTING | Coot | 0.9.8.7 |
| INITIAL EULER ASSIGNMENT | cryoSPARC | 3.3.2 |
| FINAL EULER ASSIGNMENT | cryoSPARC | 4.1.2 |
| CLASSIFICATION | cryoSPARC | 3.3.2 |
| RECONSTRUCTION | cryoSPARC | 3.3.2 |
| MODEL REFINEMENT | PHENIX | 1.19.2-4158 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | Patch CTF correction in cryoSPARC | 7544324 | ||
