ELECTRON MICROSCOPY

Sample

HIV-1 Capsid Protein Assembly

Specimen Preperation
Sample Aggregation State HELICAL ARRAY
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details The assembled sample (1.5 microliter) was applied to the carbon side of a glow discharged perforated Quantifoil grid, followed by application of 3 microliter of low salt buffer (100 milimolar NaCl, 50 milimolar Tris pH 8.0) on the back side of the grid, and blotting, from the back side, with a filter paper, before plunge-freezing in liquid ethane
3D Reconstruction
Reconstruction Method HELICAL
Number of Particles 38452
Reported Resolution (Å) 5
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type HELICAL
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 41
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI POLARA 300
Minimum Defocus (nm) 700
Maximum Defocus (nm) 2200
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.2
Imaging Mode BRIGHT FIELD
Specimen Holder Model SIDE ENTRY, EUCENTRIC
Nominal Magnification 31000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION EMAN 2
CTF CORRECTION CTFFIND 3
MODEL FITTING MDFF 2.10
MODEL REFINEMENT Rosetta 3.0
INITIAL EULER ASSIGNMENT IHRSR ?
FINAL EULER ASSIGNMENT RELION 1.4
RECONSTRUCTION RELION 1.4
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?