5A9K
Structural basis for DNA strand separation by a hexameric replicative helicase
ELECTRON MICROSCOPY
| Sample |
|---|
| HELICASE DOMAIN OF THE FULL-LENGTH E1 HELICASE FROM BOVINE PAPILLOMAVIRUS |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Staining Type | NEGATIVE |
| Staining Material | uranyl acetate |
| Staining Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 8265 |
| Reported Resolution (Å) | 19 |
| Resolution Method | |
| Other Details | SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-3087. (DEPOSITION ID: 13536). |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C6 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (2V9P) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | OTHER | ||||
| Refinement Target | Cross-correlation coefficient | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | METHOD--LOCAL CORRELATION REFINEMENT PROTOCOL--X-RAY | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN ULTRASCAN 4000 (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 20 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | 2010-02-18 |
| Temperature (Kelvin) | 293 |
| Microscope Model | FEI TECNAI F20 |
| Minimum Defocus (nm) | 500 |
| Maximum Defocus (nm) | 1500 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.1 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | 62000 |
| Calibrated Magnification | 67000 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| CTF CORRECTION | CTFFIND | 3 |
| CTF CORRECTION | ctfit | |
| MODEL FITTING | UCSF Chimera | |
| RECONSTRUCTION | IMAGIC | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| FRAMES | ||||
