ELECTRON MICROSCOPY
| Sample |
|---|
| 70S ribosome with S1 domains 1 and 2 (Class 1) |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | GATAN CRYOPLUNGE 3 |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | 2 uL of complex was applied to each grid. After a 10-second incubation, the grids were blotted for 2 to 4 seconds. |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 10289 |
| Reported Resolution (Å) | 3.5 |
| 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 | RIGID BODY FIT | ||||
| Refinement Target | correlation coefficient | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 1 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 500 |
| Maximum Defocus (nm) | 5000 |
| 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 | 60976 |
| Calibrated Magnification | 60976 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | Signature | 2.02a |
| IMAGE ACQUISITION | SerialEM | 3 |
| CTF CORRECTION | CTFFIND | 3 |
| MODEL FITTING | UCSF Chimera | 1.7 |
| INITIAL EULER ASSIGNMENT | FREALIGN | 9.11 |
| FINAL EULER ASSIGNMENT | FREALIGN | 9.11 |
| CLASSIFICATION | FREALIGN | 9.11 |
| RECONSTRUCTION | FREALIGN | 9.11 |
| MODEL REFINEMENT | RSRef | 1.1 |
| MODEL REFINEMENT | CNS | 1.3 |
| 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 | CTFFIND3 was used to determine CTF values. FREALIGN applied CTF correction. | 800367 | Particles were picked from micrographs using Signature reference-based particle picker. | |
