ELECTRON MICROSCOPY

Sample

HIV-1

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument LEICA EM GP
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 594567
Reported Resolution (Å) 3.5
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 Molecular dynamics flexible fitting was done using NAMD targeting cross-correlation coefficients.
Data Acquisition
Detector Type GATAN K3 BIOCONTINUUM (6k x 4k)
Electron Dose (electrons/Å2) 50
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 400
Maximum Defocus (nm) 2400
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 105000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Preliminary grid screening was performed manually.
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 4.3.1
IMAGE ACQUISITION SerialEM 4.1
CTF CORRECTION CTFFIND 4.1.14
MODEL FITTING NAMD 3.0.1
INITIAL EULER ASSIGNMENT cryoSPARC 4.3.1
FINAL EULER ASSIGNMENT RELION 5.0
CLASSIFICATION RELION 5.0
RECONSTRUCTION RELION 5.0
MODEL REFINEMENT NAMD 3.0.1
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
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