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unseeded Abeta(1-40) amyloid fibril (morphology ii)
Sample in vitro Abeta(1-40) amyloid fibril
Specimen Preparation Sample Aggregation State HELICAL ARRAY Vitrification Instrument LEICA PLUNGER Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method HELICAL Number of Particles 40968 Reported Resolution (Å) 2.73 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type HELICAL Axial Symmetry C1 Axial Rise 2.372 Angular Rotation 179.526
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol BACKBONE TRACE Refinement Target correlation coefficient Overall B Value 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) 600 Maximum Defocus (nm) 2100 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 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 3.1.3 IMAGE ACQUISITION SerialEM CTF CORRECTION CTFFIND 4.1 MODEL FITTING Coot 0.9.2 MODEL REFINEMENT PHENIX 1.20.1-4487 RECONSTRUCTION RELION 3.1.3
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 41423