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Cryo-EM structure of amyloid fibril isolated from the kidney of a variant Alect2-I40V amyloidosis patient
Sample Leukocyte cell-derived chemotaxin-2 protein
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method HELICAL Number of Particles 36221 Reported Resolution (Å) 2.4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type HELICAL Axial Symmetry C1 Axial Rise 4.75 Angular Rotation -0.91
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol OTHER Refinement Target Overall B Value 45 Fitting Procedure Details We used ModelAngelo to obtain the initial fibril model of a single chain.
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 40
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 2600 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 4.0 IMAGE ACQUISITION EPU 3.5 CTF CORRECTION CTFFIND 4.1 MODEL FITTING Coot 0.9.8.1 INITIAL EULER ASSIGNMENT RELION 4.0 FINAL EULER ASSIGNMENT RELION 4.0 CLASSIFICATION RELION 4.0 RECONSTRUCTION RELION 4.0 MODEL REFINEMENT PHENIX 1.20.1_4487
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE 179392 We used Relion built-in Topaz to autopick this dataset.