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Molecular structure of the core of amyloid-like fibrils formed by residues 111-214 of FUS
Sample FUS low complexity sequence
Specimen Preparation Sample Aggregation State HELICAL ARRAY Vitrification Instrument LEICA PLUNGER Cryogen Name ETHANE Sample Vitrification Details Preblot for 10 seconds and blot for 5 seconds before plunging
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 275520 Reported Resolution (Å) 2.62 Resolution Method FSC 0.143 CUT-OFF Other Details 3D refinement and post-processing were performed with 21 (screw) symmetry Refinement Type Symmetry Type POINT Point Symmetry C1 Axial Symmetry C2 Axial Rise 4.8 Angular Rotation -2
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol OTHER Refinement Target Overall B Value Fitting Procedure Details Manually generated model was fit into the density using PHENIX and UCSF Chimera. Further refinements were performed using Xplor-NIH.
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 47
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 130000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.0 IMAGE ACQUISITION SerialEM CTF CORRECTION RELION 3.0 MODEL FITTING Coot INITIAL EULER ASSIGNMENT RELION 3.0 FINAL EULER ASSIGNMENT RELION 3.0 CLASSIFICATION RELION 3.0 RECONSTRUCTION RELION 3.0 MODEL REFINEMENT PHENIX MODEL REFINEMENT UCSF Chimera MODEL REFINEMENT X-PLOR Xplor-NIH
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE Gctf 499206 499206 of particles were extracted from the 58185 fibril segments using a 400-pixel box size and 91.6% overlap.