7SAT
Structure of PorLM, the proton-powered motor that drives Type IX protein secretion
ELECTRON MICROSCOPY
Sample |
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Type IX Secretion System PorLM motor complex |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | FEI VITROBOT MARK IV |
Cryogen Name | ETHANE |
Sample Vitrification Details | Wait time 10 s Blot time 2 s |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 649359 |
Reported Resolution (Å) | 3.9 |
Resolution Method | FSC 0.143 CUT-OFF |
Other Details | RELION 3.1 was used for reconstruction |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Map-Model Fitting and Refinement | |||||
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Id | 1 | ||||
Refinement Space | REAL | ||||
Refinement Protocol | AB INITIO MODEL | ||||
Refinement Target | |||||
Overall B Value | 72.16 | ||||
Fitting Procedure | |||||
Details | A homology model based on the structure of FjoGldLM (PDB 6YS8) was used as a starting model and modified to fit the EM density using Coot. Refinement ... |
Data Acquisition | |||||||||
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Detector Type | GATAN K3 BIOQUANTUM (6k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 55 |
Imaging Experiment | 1 |
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Date of Experiment | |
Temperature (Kelvin) | |
Microscope Model | FEI TITAN KRIOS |
Minimum Defocus (nm) | |
Maximum Defocus (nm) | |
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 | ||
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Task | Software Package | Version |
PARTICLE SELECTION | SIMPLE | 3.0 |
CTF CORRECTION | SIMPLE | 3.0 |
MODEL FITTING | Coot | 0.9.4.1 |
MODEL REFINEMENT | PHENIX | 1.18.2 |
INITIAL EULER ASSIGNMENT | RELION | 3.1 |
FINAL EULER ASSIGNMENT | RELION | 3.1 |
CLASSIFICATION | RELION | 3.1 |
RECONSTRUCTION | RELION | 3.1 |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
PHASE FLIPPING AND AMPLITUDE CORRECTION | 8205503 |