6GSI

Feline Calicivirus Strain F9 bound to a soluble ectodomain fragment of feline junctional adhesion molecule A - leading to assembly of a portal structure at a unique three-fold axis.

ELECTRON MICROSCOPY

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Sample
Feline calicivirus strain F9
Sample Components
Capsid
feline junctional adhesion molecule A
VP2 - portal.

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	58510
Reported Resolution (Å)	3.75
Resolution Method	FSC 0.143 CUT-OFF
Other Details	Origins and orientations were originally assigned by 3D auto refinement with full icosahedral symmetry. Random group assignment was carried through the focussed classification process and used to divide the data into two roughly even halves that had been initially refined independently.
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Data Acquisition
Detector Type	FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)	63

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
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	75000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
IMAGE ACQUISITION	EPU
CTF CORRECTION	Gctf
INITIAL EULER ASSIGNMENT	RELION	2.1
FINAL EULER ASSIGNMENT	RELION	2.1
CLASSIFICATION	RELION	2.1
RECONSTRUCTION	RELION	2.1

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION	CTF correction was implemented through Relion	129884	Autopicking in Relion