6Z0U
CryoEM structure of the Chikungunya virus nsP1 complex
ELECTRON MICROSCOPY
Refinement
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 7.6905 |
| f_angle_d | 0.6938 |
| f_chiral_restr | 0.0504 |
| f_bond_d | 0.0069 |
| f_plane_restr | 0.0054 |
| Sample |
|---|
| Chikungunya NsP1 capping pore complex |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | LEICA EM CPC |
| Cryogen Name | ETHANE-PROPANE |
| Sample Vitrification Details | 3ul of sample was spotted onto the grid and hand blotted prior to plunge freezing. |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 47338 |
| Reported Resolution (Å) | 2.9 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | D12 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | AB INITIO MODEL | ||||
| Refinement Target | CC | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 38.5 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 1000 |
| Maximum Defocus (nm) | 2500 |
| 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 | 165000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | EPU | 1.5.0.32 |
| CTF CORRECTION | CTFFIND | 4.1 |
| MODEL FITTING | Coot | 0.8.9.2 |
| MODEL REFINEMENT | PHENIX | 1.17.1 |
| INITIAL EULER ASSIGNMENT | RELION | 3.0.8 |
| FINAL EULER ASSIGNMENT | RELION | 3.0.8 |
| CLASSIFICATION | RELION | 3.0.8 |
| RECONSTRUCTION | RELION | 3.0.8 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | CTF was estimated from movie frames aligned without dose-weighting. Per particle CTF correction was also performed with polished particles. | 263415 | Autopicking following generation of templates from 2D class averages | |
