8B2X
Structure of the type I-G CRISPR effector
ELECTRON MICROSCOPY
Refinement
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 12.794 |
| f_angle_d | 0.677 |
| f_chiral_restr | 0.038 |
| f_plane_restr | 0.006 |
| f_bond_d | 0.002 |
| Sample |
|---|
| Type I-G cascade complex large subunit CSX17 protein |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | blot time 3.5, blot force 4 |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 415000 |
| Reported Resolution (Å) | 8 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | Multi-body refinement. |
| Refinement Type | |
| Symmetry Type | POINT |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | Correlation Coefficient | ||||
| Overall B Value | 188 | ||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 BIOQUANTUM (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 50 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 1600 |
| Maximum Defocus (nm) | 2800 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
| Nominal Magnification | 105000 |
| Calibrated Magnification | 105000 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | EPU | |
| CTF CORRECTION | CTFFIND | 4 |
| MODEL FITTING | Flex-EM | |
| MODEL FITTING | ISOLDE | |
| MODEL FITTING | UCSF ChimeraX | |
| MODEL REFINEMENT | PHENIX | 1.20 |
| INITIAL EULER ASSIGNMENT | RELION | 4 |
| FINAL EULER ASSIGNMENT | RELION | 4 |
| CLASSIFICATION | RELION | 4 |
| RECONSTRUCTION | RELION | 4 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING ONLY | 1000 | |||
