Experiment: 9R0S

ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	AlphaFold	Q9BPY3F1

Sample
homopolymer/filament of human FAM118B

Specimen Preparation
Sample Aggregation State	FILAMENT
Vitrification Instrument	LEICA EM GP
Cryogen Name	ETHANE
Sample Vitrification Details	A 3.5 uL of sample was applied to the holey carbon side of the grid. Without an additional incubation time, the grid was back blotted once for 1.5 s a ...	A 3.5 uL of sample was applied to the holey carbon side of the grid. Without an additional incubation time, the grid was back blotted once for 1.5 s and plunge frozen in liquid ethane.

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	111156
Reported Resolution (Å)	5
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT

Map-Model Fitting and Refinement
Id	1
Refinement Space	REAL
Refinement Protocol	FLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details	Molecular dynamics flexible fitting was used in ISOLDE/Chimerax

Data Acquisition
Detector Type	GATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)	43.7

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	TFS KRIOS
Minimum Defocus (nm)	1600
Maximum Defocus (nm)	2600
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
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	cryoSPARC	4.5.3
IMAGE ACQUISITION	EPU
CTF CORRECTION	cryoSPARC	4.5.3
MODEL FITTING	UCSF ChimeraX	1.9
MODEL REFINEMENT	ISOLDE	1.7
INITIAL EULER ASSIGNMENT	cryoSPARC	4.5.3
FINAL EULER ASSIGNMENT	cryoSPARC	4.5.3
CLASSIFICATION	cryoSPARC	4.5.3
RECONSTRUCTION	cryoSPARC	4.5.3

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		1958302

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.