8A7E
PAPP-A dimer in complex with its inhibitor STC2
ELECTRON MICROSCOPY
| Sample |
|---|
| PAPP-A dimer in complex with its endogenous inhibitor STC2 dimer |
| Sample Components |
| Pregnancy-associated plasma protein A |
| Stanniocalcin-2 |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | LEICA EM GP |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Blot time 4.5 sec |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 3 |
| Reported Resolution (Å) | 5.02 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | Composite map |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C2 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | RIGID BODY FIT | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | Initial model source: alphafold2 models PAPP-A AF-Q13219-F1 STC2 AF-O76061-F1 | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 BIOQUANTUM (6k x 4k) | GATAN K3 BIOQUANTUM (6k x 4k) | |||||||
| Electron Dose (electrons/Å**2) | 58 | 59 | |||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 600 |
| Maximum Defocus (nm) | 1800 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | cryoSPARC | 3 |
| IMAGE ACQUISITION | EPU | |
| CTF CORRECTION | cryoSPARC | 3.3 |
| MODEL FITTING | Coot | |
| CLASSIFICATION | cryoSPARC | 3 |
| RECONSTRUCTION | PHENIX | 1.20 |
| MODEL REFINEMENT | PHENIX | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| NONE | 601179 | Topaz train and extraction | ||
