ELECTRON MICROSCOPY

Sample

Capsid-like particles of in vitro assembled HIV-1 CA protein

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details Manual plunge-freezing
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 525219
Reported Resolution (Å) 3.43
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 OTHER
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details The following protein chains were refined separately in real space using Phenix: A (pentamer); L, M and N (half-hexamer). Chain M was then rigid-body fit to generate chains O, P and Q to complete the hexamer. Chains O, P and Q are deposited as polyALA models.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 50
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 500
Maximum Defocus (nm) 2500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING PHENIX ?
INITIAL EULER ASSIGNMENT cryoSPARC ?
RECONSTRUCTION cryoSPARC v3.3.1
MODEL REFINEMENT PHENIX ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?