ELECTRON MICROSCOPY

Sample

Fully glycosylated BG505 SOSIP.664 Envelope trimer with 3 broadly neutralizing PGV04 Fabs

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details 3 uL sample applied to grid, adsorbed for 30 seconds, blotted, and plunge-frozen in liquid ethane
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 49572
Reported Resolution (Å) 5.8
Resolution Method FSC 0.143 CUT-OFF
Other Details Final maps were calculated after sorting for the presence of sub-stoichiometrically labeled trimers (Single particle details: reconstructed using a resolution-limited refinement procedure implemented in Xmipp and Frealign) (Single particle--Applied symmetry: C3)
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 32
Imaging Experiment
Date of Experiment 2013-02-21
Temprature (Kelvin)
Microscope Model FEI TECNAI F20
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 5000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2
Imaging Mode BRIGHT FIELD
Specimen Holder Model SIDE ENTRY, EUCENTRIC
Nominal Magnification 29000
Calibrated Magnification 29000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details electron counting mode
Imaging Experiment
Task Software Package Version
RECONSTRUCTION FREALIGN ?
RECONSTRUCTION Xmipp ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. Frealign
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