2N1F | pdb_00002n1f

Structure and assembly of the mouse ASC filament by combined NMR spectroscopy and cryo-electron microscopy

SOLID-STATE NMR - ELECTRON MICROSCOPY

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
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
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	850

NMR Refinement
Method	Details	Software
simulated annealing		XPLOR-NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
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
Mouse ASC-PYD filament
Sample Components
ASC filament

Specimen Preparation
Sample Aggregation State	FILAMENT
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	Grids were blotted for one second before plunging into liquid ethane (FEI VITROBOT MARK IV).

3D Reconstruction
Reconstruction Method	HELICAL
Number of Particles
Reported Resolution (Å)	4
Resolution Method	FSC 0.5 CUT-OFF
Other Details
Refinement Type
Symmetry Type	HELICAL
Axial Symmetry	C3
Axial Rise	14.2
Angular Rotation	53

Map-Model Fitting and Refinement
Id	1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	DIRECT ELECTRON DE-10 (5k x 4k)
Electron Dose (electrons/Å**2)	20

Imaging Experiment	1
Date of Experiment	2014-10-10
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)	-12
Maximum Tilt Angle (degrees)	12
Nominal CS
Imaging Mode	DIFFRACTION
Specimen Holder Model	FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification	22500
Calibrated Magnification
Source	TUNGSTEN HAIRPIN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
RECONSTRUCTION	EMAN	2
RECONSTRUCTION	IHRSR
RECONSTRUCTION	SPIDER

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
	CTFFIND3

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.