8FEF
Structure of Mce1 transporter from Mycobacterium smegmatis (Map0)
ELECTRON MICROSCOPY
| Sample |
|---|
| Mce1 lipid transporter composed of Mce1 MCE proteins (Mce1ABCDEF) and an ABC transporter (YrbE1A-B, 2 copies of MceG) |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 305172 |
| Reported Resolution (Å) | 2.71 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | Final reconstruction performed with consensus set of particles using a mask excluding LucB in the inner membrane region. |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | Cross-correlation coefficient | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | Model was initial fitted into the map using Chimera follow-by rigid body refinement in PHENIX. Models were further refined using PHENIX real-space ref ... | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 BIOQUANTUM (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 60 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 800 |
| Maximum Defocus (nm) | 2400 |
| 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 | 105000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | Topaz | 0.2.3 |
| IMAGE ACQUISITION | SerialEM | |
| CTF CORRECTION | cryoSPARC | 3.3.1 |
| MODEL FITTING | UCSF Chimera | v1.16 |
| INITIAL EULER ASSIGNMENT | cryoSPARC | 3.3.1 |
| FINAL EULER ASSIGNMENT | cryoSPARC | 3.3.1 |
| RECONSTRUCTION | cryoSPARC | 3.3.1 |
| MODEL REFINEMENT | PHENIX | v1.20.1 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 2869223 | |||
