8OI0

Structure of the Fmoc-Tau-PAM4 Type 4 amyloid fibril


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 8OHP 

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d9.685
f_angle_d0.662
f_chiral_restr0.053
f_bond_d0.007
f_plane_restr0.002
Sample
Amyloid fibril form 2b of Tau-PAM4 peptide adducted with the Fmoc protection group
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles14404
Reported Resolution (Å)2.9
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypeHELICAL
Axial SymmetryC1
Axial Rise4.8
Angular Rotation-1.08
Map-Model Fitting and Refinement
Id1 (8OHP, 8OHP)
Refinement SpaceREAL
Refinement ProtocolAB INITIO MODEL
Refinement TargetCross-correlation coefficient
Overall B Value64
Fitting Procedure
DetailsInitial model edited in coot
Data Acquisition
Detector TypeFEI FALCON IV (4k x 4k)
Electron Dose (electrons/Å**2)32
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1200
Maximum Defocus (nm)2400
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification130000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcrYOLO1.8
IMAGE ACQUISITIONEPU3.0
CTF CORRECTIONCTFFIND4.14
MODEL FITTINGCoot0.8.9
INITIAL EULER ASSIGNMENTRELION4.0
FINAL EULER ASSIGNMENTRELION4.0
CLASSIFICATIONRELION4.0
RECONSTRUCTIONRELION4.0
MODEL REFINEMENTPHENIX1.17.1:
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION520390