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Cryo-EM structure of cardiac amyloid fibril from a variant ATTRV122delta, single filament morphology
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 8TDN
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 4.562 f_angle_d 0.491 f_chiral_restr 0.048 f_plane_restr 0.006 f_bond_d 0.003
Sample fibril of ATTRV122delta
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method HELICAL Number of Particles 32315 Reported Resolution (Å) 3.63 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type HELICAL Axial Symmetry C1 Axial Rise 4.9 Angular Rotation -1.27
Map-Model Fitting and Refinement Id 1 (8TDN) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value 117 Fitting Procedure Details
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 FEI TITAN KRIOS Minimum Defocus (nm) 900 Maximum Defocus (nm) 2200 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 4.1 FINAL EULER ASSIGNMENT RELION 4.1 CLASSIFICATION RELION 4.0 RECONSTRUCTION RELION 4.1 MODEL REFINEMENT PHENIX 1.20.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE 498426