8AVD
Cryo-EM structure for a 3:3 complex between mouse leptin and the mouse LEP-R ectodomain (local refinement)
ELECTRON MICROSCOPY
Refinement
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 5.2816 |
| f_angle_d | 1.095 |
| f_chiral_restr | 0.0638 |
| f_plane_restr | 0.0061 |
| f_bond_d | 0.0048 |
| Sample |
|---|
| Stucture of mouse leptin in complex with a trimerized form of the mouse Lep-R extracellular region |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | LEICA EM GP |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 54708 |
| Reported Resolution (Å) | 4.42 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | The final map was obtained via local refinement in cryoSPARC using a mask around the mouse leptin:LEP-R core region of the trimeric complex |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (7Z3R) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 BIOQUANTUM (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 45 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | TFS KRIOS |
| Minimum Defocus (nm) | 1200 |
| Maximum Defocus (nm) | 2500 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.7 |
| Imaging Mode | OTHER |
| Specimen Holder Model | |
| Nominal Magnification | 105000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | cryoSPARC | v3.3.1 |
| CTF CORRECTION | cryoSPARC | v3.3.1 |
| MODEL FITTING | UCSF Chimera | |
| MODEL REFINEMENT | PHENIX | 1.19.2-4158 |
| INITIAL EULER ASSIGNMENT | cryoSPARC | v3.3.1 |
| FINAL EULER ASSIGNMENT | cryoSPARC | v3.3.1 |
| CLASSIFICATION | cryoSPARC | v3.3.1 |
| RECONSTRUCTION | cryoSPARC | v3.3.1 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 141157 | |||
