8PJ9
Cas9 bound to cognate DNA, Streptococcus thermophilus DGCC 7710 CRISPR3 system
ELECTRON MICROSCOPY
| Sample |
|---|
| Complex of Cas9 bound to crRNA:tracrRNA and to a cognate DNA duplex |
| Sample Components |
| CRISPR-associated endonuclease Cas9 |
| crRNA, chain B and tracrRNA, chain C |
| DNA oligoduplex, target strand, chains D,E and DNA oligoduplex, non-target strand, chain F |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 119790 |
| Reported Resolution (Å) | 3.24 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | |||||
| Refinement Protocol | |||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | FEI FALCON III (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 30 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | TFS GLACIOS |
| Minimum Defocus (nm) | 1000 |
| Maximum Defocus (nm) | 2000 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.7 |
| Imaging Mode | OTHER |
| Specimen Holder Model | |
| Nominal Magnification | 92000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | cryoSPARC | 4.0.3 |
| IMAGE ACQUISITION | EPU | 3.0 |
| CTF CORRECTION | cryoSPARC | 4.0.3 |
| MODEL FITTING | UCSF ChimeraX | 1.3 |
| MODEL FITTING | Coot | 0.9.8.1 |
| RECONSTRUCTION | cryoSPARC | 4.1.1 |
| MODEL REFINEMENT | PHENIX | 1.21rc1_4903 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| NONE | 894269 | Blob picking in cryoSPARC live session | ||
