Structure and assembly of the mouse ASC filament by combined NMR spectroscopy and cryo-electron microscopy
SOLID-STATE NMR - ELECTRON MICROSCOPY
NMR Experiment |
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
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1 | NCACX | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
2 | NCOCX | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
3 | NCACB | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
4 | CANCO | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
5 | CCC | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
6 | NCA | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
7 | NCO | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
8 | 20msDARR | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
9 | N(CO)CACB | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
10 | CAN(CO)CA | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
11 | N(CA)CBCX | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
12 | 100msPDSD | 15 mg [U-100% 13C; U-100% 15N] ASC filament | 90% H2O/10% D2O | | | ambient | 288 | |
NMR Spectrometer Information |
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Spectrometer | Manufacturer | Model | Field Strength |
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1 | Bruker | AVANCE | 850 |
NMR Refinement |
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Method | Details | Software |
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simulated annealing | | XPLOR-NIH |
NMR Ensemble Information |
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Conformer Selection Criteria | structures with the lowest energy |
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Conformers Calculated Total Number | 100 |
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Conformers Submitted Total Number | 10 |
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Representative Model | 1 (lowest energy) |
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Computation: NMR Software |
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# | Classification | Version | Software Name | Author |
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1 | chemical shift assignment | CYANA | | Guntert, Mumenthaler and Wuthrich |
2 | data analysis | CYANA | | Guntert, Mumenthaler and Wuthrich |
3 | structure solution | CYANA | | Guntert, Mumenthaler and Wuthrich |
4 | refinement | XPLOR-NIH | | Schwieters, Kuszewski, Tjandra and Clore |
Sample |
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Mouse ASC-PYD filament |
Sample Components |
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ASC filament |
Specimen Preparation |
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Sample Aggregation State | FILAMENT |
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Vitrification Instrument | FEI VITROBOT MARK IV |
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Cryogen Name | ETHANE |
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Sample Vitrification Details | Grids were blotted for one second before plunging into liquid ethane (FEI VITROBOT MARK IV). |
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3D Reconstruction |
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Reconstruction Method | HELICAL |
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Number of Particles | |
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Reported Resolution (Å) | 4 |
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Resolution Method | FSC 0.5 CUT-OFF |
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Other Details | |
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Refinement Type | |
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Symmetry Type | HELICAL |
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Axial Symmetry | C3 |
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Axial Rise | 14.2 |
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Angular Rotation | 53 |
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Map-Model Fitting and Refinement |
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Id | 1 |
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Refinement Space | |
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Refinement Protocol | |
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Refinement Target | |
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Overall B Value | |
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Fitting Procedure | |
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Details | |
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Data Acquisition |
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Detector Type | DIRECT ELECTRON DE-10 (5k x 4k) |
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Electron Dose (electrons/Å**2) | 20 |
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Imaging Experiment | 1 |
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Date of Experiment | 2014-10-10 |
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Temperature (Kelvin) | |
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Microscope Model | FEI TITAN KRIOS |
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Minimum Defocus (nm) | |
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Maximum Defocus (nm) | |
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Minimum Tilt Angle (degrees) | -12 |
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Maximum Tilt Angle (degrees) | 12 |
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Nominal CS | |
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Imaging Mode | DIFFRACTION |
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Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
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Nominal Magnification | 22500 |
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Calibrated Magnification | |
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Source | TUNGSTEN HAIRPIN |
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Acceleration Voltage (kV) | 300 |
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Imaging Details | |
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EM Software |
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Task | Software Package | Version |
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RECONSTRUCTION | EMAN | 2 |
RECONSTRUCTION | IHRSR | |
RECONSTRUCTION | SPIDER | |
Image Processing |
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details |
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| CTFFIND3 | | |