8CZC
AT from first module of the pikromycin synthase
ELECTRON MICROSCOPY
| Sample |
|---|
| Pik127 |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Blotted for 3 seconds with a force of "1" before plunging. |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 184737 |
| Reported Resolution (Å) | 2.86 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | Maps were density modified using Phenix to a calculated resolution of 2.77 Angstroms. |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (2QO3) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | Phenix | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 70 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 800 |
| Maximum Defocus (nm) | 1500 |
| 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 | |
| Calibrated Magnification | 61728 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details | Collected 4284 movies at 0 degrees tilt and 2912 movies at -30 degrees tilt |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | SerialEM | |
| CTF CORRECTION | cryoSPARC | 3.2.0 |
| MODEL FITTING | UCSF ChimeraX | 1.1.1 |
| MODEL FITTING | PHENIX | 1.19.2-4158 |
| MODEL REFINEMENT | Coot | 0.8.9.2 |
| MODEL REFINEMENT | PHENIX | 1.19.2-4158 |
| INITIAL EULER ASSIGNMENT | cryoSPARC | 3.2.0 |
| FINAL EULER ASSIGNMENT | cryoSPARC | 3.2.0 |
| CLASSIFICATION | cryoSPARC | 3.2.0 |
| RECONSTRUCTION | cryoSPARC | 3.2.0 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | CTF correction performed by cryosparc during reconstruction | 6761206 | From blob picker, 6,761,206 particles were selected. Then, from template picker, 2,350,020 particles were selected. | |
