6XDC
Cryo-EM structure of SARS-CoV-2 ORF3a
ELECTRON MICROSCOPY
Refinement
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 18.0091 |
| f_angle_d | 0.7832 |
| f_chiral_restr | 0.0619 |
| f_plane_restr | 0.0077 |
| f_bond_d | 0.0059 |
| Sample |
|---|
| ORF3a in MSPE3D1 nanodisc |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | 1 blot force, 5 second wait time, 3 second blot time |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 185871 |
| Reported Resolution (Å) | 2.9 |
| 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 | REAL | ||||
| Refinement Protocol | OTHER | ||||
| Refinement Target | |||||
| Overall B Value | 108.61 | ||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 50.675 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TALOS ARCTICA |
| Minimum Defocus (nm) | |
| Maximum Defocus (nm) | |
| 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) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | Topaz | |
| CTF CORRECTION | CTFFIND | 4.1 |
| MODEL FITTING | Coot | 0.9-pre |
| INITIAL EULER ASSIGNMENT | cryoSPARC | 2 |
| FINAL EULER ASSIGNMENT | cryoSPARC | 2 |
| CLASSIFICATION | cryoSPARC | |
| RECONSTRUCTION | cryoSPARC | 2 |
| MODEL REFINEMENT | PHENIX | 1.17.1-3660 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 4134279 | |||
