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Cryo-EM structure of designed Orb2 amyloid (FIMMF, polymorph 3)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model Other
Sample Cryo-EM Structure of designed Orb2 amyloid (FIMMF; Polymorph 3)
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Vitrification Carried out in liquid Nitrogen atmosphere
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 227349 Reported Resolution (Å) 3.35 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target Cross Correlation Coefficient Overall B Value 846 Fitting Procedure Details Initial model fitting was performed using Coot and Phenix, with final adjustments completed in ChimeraX.
Data Acquisition Detector Type TFS FALCON 4i (4k x 4k) Electron Dose (electrons/Å**2) 60
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2400 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 RELION 5.0-Beta-1 IMAGE ACQUISITION SerialEM 4.0 CTF CORRECTION CTFFIND MODEL FITTING Coot 0.9.8.96 MODEL REFINEMENT PHENIX 1.21 INITIAL EULER ASSIGNMENT RELION 5.0-beta-1-commit-b75b38 FINAL EULER ASSIGNMENT RELION 5.0-beta-1-commit-b75b38 CLASSIFICATION RELION 5.0-beta-1-commit-b75b38 RECONSTRUCTION RELION 5.0-beta-1-commit-b75b38
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2192140