ELECTRON MICROSCOPY

Sample

Human immunodeficiency virus 1

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK II
Cryogen Name ETHANE
Sample Vitrification Details 10nm colloidal gold was added to the sample prior to plunge freezing
3D Reconstruction
Reconstruction Method SUBTOMOGRAM AVERAGING
Number of Particles 72836
Reported Resolution (Å) 6.8
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target Cross-correlation coefficient
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 QUANTUM (4k x 4k)
Electron Dose (electrons/Å2) 2.2
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 2000
Maximum Defocus (nm) 6500
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 ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Nanoprobe
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION SerialEM ?
CTF CORRECTION IMOD ?
MODEL FITTING MDFF ?
MODEL FITTING NAMD ?
FINAL EULER ASSIGNMENT AV3 ?
FINAL EULER ASSIGNMENT TOM Toolbox ?
RECONSTRUCTION AV3 ?
RECONSTRUCTION TOM Toolbox ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING ONLY CTF correction was performed using the ctfphaseflip program in IMOD prior to backprojection.