5Y36
Cryo-EM structure of SpCas9-sgRNA-DNA ternary complex
ELECTRON MICROSCOPY
| Sample |
|---|
| SpCas9-sgRNA-target DNA complex |
| Sample Components |
| SpCas9 |
| single-guide RNA |
| Target DNA |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | blot for 4 seconds before pluging |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 57484 |
| Reported Resolution (Å) | 5.2 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (4OO8) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | Correlation coefficient | ||||
| Overall B Value | 80 | ||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 10 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 1300 |
| Maximum Defocus (nm) | |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
| Nominal Magnification | |
| Calibrated Magnification | 18000 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | RELION | 1.3 |
| IMAGE ACQUISITION | RELION | 1.3 |
| CTF CORRECTION | CTFFIND3 | 3.0 |
| MODEL FITTING | NAMD | 2.10 |
| MODEL REFINEMENT | Rosetta | 3.5 |
| INITIAL EULER ASSIGNMENT | RELION | 1.3 |
| FINAL EULER ASSIGNMENT | RELION | 1.3 |
| CLASSIFICATION | RELION | 1.3 |
| RECONSTRUCTION | RELION | 1.3 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING ONLY | 66845 | |||
