9HR6 | pdb_00009hr6

cryoEM structure of amyloid fibrils formed by human RIPK1


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
in silico modelOther 
Sample
hRIPK1 RHIM-mediated amyloid fibril
Specimen Preparation
Sample Aggregation StateHELICAL ARRAY
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Detailstime 5.5s, blotting force 2
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles460173
Reported Resolution (Å)2.57
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypeHELICAL
Axial SymmetryC1
Axial Rise4.667
Angular Rotation-7.319
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value66.05
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K3 BIOCONTINUUM (6k x 4k)
Electron Dose (electrons/Å**2)49.3
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS KRIOS
Minimum Defocus (nm)800
Maximum Defocus (nm)1600
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification165000
Calibrated Magnification
SourceLAB6
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC4.6.0
IMAGE ACQUISITIONEPU3.8.0.7600
CTF CORRECTIONcryoSPARC4.6.0
INITIAL EULER ASSIGNMENTcryoSPARC4.6.0
FINAL EULER ASSIGNMENTcryoSPARC4.6.0
RECONSTRUCTIONcryoSPARC4.6.2
MODEL REFINEMENTCoot0.9.2
MODEL REFINEMENTPHENIX1.21
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION2814672