6Z7P
Composite model of the Caulobacter crescentus S-layer bound to the O-antigen of lipopolysaccharide
ELECTRON MICROSCOPY
Sample |
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S-layer |
Specimen Preparation | |
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Sample Aggregation State | CELL |
Vitrification Instrument | FEI VITROBOT MARK IV |
Cryogen Name | NITROGEN |
Sample Vitrification Details | 1.5 s blot |
3D Reconstruction | |
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Reconstruction Method | SUBTOMOGRAM AVERAGING |
Number of Particles | 51866 |
Reported Resolution (Å) | 4.8 |
Resolution Method | FSC 0.143 CUT-OFF |
Other Details | Tomogram generation in IMOD using the NovaCTF implementation of Turonova and Briggs. Sub-tomogram averaging performed using the AV3 package (Friedrich ... |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Map-Model Fitting and Refinement | |||||
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Id | 1 (5N8P, 6T72) | ||||
Refinement Space | REAL | ||||
Refinement Protocol | RIGID BODY FIT | ||||
Refinement Target | USCF Chimera | ||||
Overall B Value | |||||
Fitting Procedure | |||||
Details | Initial rigid body fit of the C-terminal X-ray structure (PDB: 5N8P, amino acids 249-1046) and the N-terminal cryo-EM structure (PDB: 6T72, amino acid ... |
Data Acquisition | |||||||||
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Detector Type | GATAN K2 QUANTUM (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 3.4 |
Imaging Experiment | 1 |
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Date of Experiment | |
Temperature (Kelvin) | |
Microscope Model | FEI TITAN KRIOS |
Minimum Defocus (nm) | -2000 |
Maximum Defocus (nm) | -5000 |
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 | 105000 |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
EM Software | ||
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Task | Software Package | Version |
VOLUME SELECTION | RELION | 1.4 |
IMAGE ACQUISITION | SerialEM | |
MODEL FITTING | UCSF Chimera | 1.13 |
MODEL FITTING | Coot | 0.9-pre |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
PHASE FLIPPING AND AMPLITUDE CORRECTION | Following Turonova and Briggs NovaCTF |