6OUT

Asymmetric focused reconstruction of human norovirus GI.1 Norwalk strain VLP asymmetric unit in T=3 symmetry


ELECTRON MICROSCOPY
Sample
Norovirus Hu/1968/US
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentLEICA EM GP
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles293580
Reported Resolution (Å)2.6
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsSymmetry expansion and signal subtraction of the icosahedral asymmetric units from the whole particle images, followed by asymmetric focused reconstru ...Symmetry expansion and signal subtraction of the icosahedral asymmetric units from the whole particle images, followed by asymmetric focused reconstruction towards the apex of the spike domain
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (1IHM, 1IHM, 1IHM)
Refinement SpaceREAL
Refinement ProtocolAB INITIO MODEL
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)78
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1000
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 SELECTIONcisTEM1.0.0
IMAGE ACQUISITIONEPU1.10
CTF CORRECTIONcisTEM1.0.0
MODEL FITTINGMOLREPCCPEM
MODEL FITTINGCoot0.8.9
INITIAL EULER ASSIGNMENTcisTEM1.0.0
FINAL EULER ASSIGNMENTcisTEM1.0.0
CLASSIFICATIONcisTEM1.0.0
RECONSTRUCTIONcisTEM1.0.0
MODEL REFINEMENTPHENIX1.14
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING ONLY38535