6AWD
Structure of 30S (S1 depleted) ribosomal subunit and RNA polymerase complex
ELECTRON MICROSCOPY
| Sample |
|---|
| 30S (S1 depleted) ribosomal subunit and RNA polymerase complex |
| Sample Components |
| 30S (S1 depleted) ribosomal subunit |
| RNA polymerase |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | 2.5 uL of 50 nM 30S and 150 nM RNAP was applied to the grid. After a 30 second incubation, the grid was blotted for 5 seconds at blotting power 8. |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 21123 |
| Reported Resolution (Å) | 8.1 |
| 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 | REAL | ||||
| Refinement Protocol | OTHER | ||||
| Refinement Target | Correlation Coefficient | ||||
| Overall B Value | 500 | ||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 40 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TALOS ARCTICA |
| Minimum Defocus (nm) | 800 |
| Maximum Defocus (nm) | 3000 |
| 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 | 22000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | cisTEM | 1.0 |
| IMAGE ACQUISITION | SerialEM | 3.6 |
| CTF CORRECTION | CTFFIND4 | |
| MODEL FITTING | UCSF Chimera | |
| INITIAL EULER ASSIGNMENT | FREALIGN | 9.11 |
| FINAL EULER ASSIGNMENT | FREALIGN | 9.11 |
| CLASSIFICATION | FREALIGN | 9.11 |
| RECONSTRUCTION | FREALIGN | 9.11 |
| MODEL REFINEMENT | RSRef | |
| MODEL REFINEMENT | PHENIX | 1.11 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 272975 | |||
