6VL6

De novo designed tetrahedral nanoparticle T33_dn2 presenting BG505 SOSIP trimers


ELECTRON MICROSCOPY
Sample
De novo designed tetrahedral nanoparticle BG505 SOSIP-T33_dn2
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsLauryl maltose neopentyl glycol (LMNG) at a final concentration of 0.005 mM was added to the nanoparticle sample (4.0 mg/mL) and 3 uL was immediately ...Lauryl maltose neopentyl glycol (LMNG) at a final concentration of 0.005 mM was added to the nanoparticle sample (4.0 mg/mL) and 3 uL was immediately loaded onto plasma-cleaned Quantifoil R 2/1 holey carbon copper grid (Cu, 400-mesh, Quantifoil Micro Tools GmbH).
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles35521
Reported Resolution (Å)4.6
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryT
Map-Model Fitting and Refinement
Id1 (5CEZ)
Refinement SpaceREAL
Refinement ProtocolOTHER
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)50
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TALOS ARCTICA
Minimum Defocus (nm)800
Maximum Defocus (nm)2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification36000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC2.9.0
IMAGE ACQUISITIONLeginon
CTF CORRECTIONGctf
MODEL FITTINGUCSF Chimera
MODEL REFINEMENTRosetta
MODEL REFINEMENTCoot
INITIAL EULER ASSIGNMENTRELION3.0
FINAL EULER ASSIGNMENTRELION3.0
CLASSIFICATIONRELION3.0
RECONSTRUCTIONRELION3.0
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING ONLY210597Template picker in cryoSPARC