9MQN | pdb_00009mqn

AngV-F Pre-fusion Protein

ELECTRON MICROSCOPY

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	SwissModel

Sample
Dimer-of-Trimer of AngV-F ectodomain in pre-fusion conformation

Specimen Preparation
Sample Aggregation State	3D ARRAY
Vitrification Instrument	LEICA EM GP
Cryogen Name	ETHANE
Sample Vitrification Details	Protein sample was applied to the grid and incubated for 30 seconds at >95% humidity. Excess protein was blotted away for 2.5 seconds before being plunge frozen into liquid ethane

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	240865
Reported Resolution (Å)	5.9
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)	28

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	TFS KRIOS
Minimum Defocus (nm)	1700
Maximum Defocus (nm)	2800
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	81000
Calibrated Magnification	81000
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details	Grid screening was performed manually

EM Software
Task	Software Package	Version
PARTICLE SELECTION	cryoSPARC	v4.5.3
CTF CORRECTION	cryoSPARC	v4.5.3
MODEL FITTING	UCSF ChimeraX	1.6.1
MODEL REFINEMENT	PHENIX	1.21.1_5286
CLASSIFICATION	cryoSPARC	v4.5.3
RECONSTRUCTION	cryoSPARC	v4.5.3

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
NONE	Micrographs were curated through contrast transfer function (CTF) where greater than 30 angstrom were discarded	13247526	Particles were picked using automated blob picker and extracted