ELECTRON MICROSCOPY Experimental Data



EM Sample
Sample Vitrification Details With 2.5 uL sample on carbon side, add 3 uL dilution buffer (100 mM NaCl, 50 mM Tris, pH 8.0) to back side. Blot 3-5 seconds from back side and plunge into liquid ethane with a homemade plunger.
Sample Aggregation State HELICAL ARRAY
Sample Reconstruction Method HELICAL
Name of Sample HIV-1 capsid protein
EM Data Acquisition
Date of Experiment 2010-12-11
Temperature (Kelvin) 82.0
Microscope Model FEI POLARA 300
Detector Type KODAK SO-163 FILM
Minimum Defocus (nm) 1000.0
Maximum Defocus (nm) 3500.0
Minimum Tilt Angle (degrees) 0.0
Maximum Tilt Angle (degrees) 0.0
Nominal CS 2.0
Imaging Mode BRIGHT FIELD
Electron Dose (electrons per Å**-2) 15.0
Illumination Mode FLOOD BEAM
Nominal Magnification 59000
Calibrated Magnification 58257
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details --
3D Reconstruction
Software Package(s) Frealign
Reconstruction Method(s) --
EM Image Reconstruction Statistics
Number of Particles 3210
Other Details (Helical Details: The segments were aligned and reconstructed using Frealign. Twofold symmetry was imposed using IHRSR++.)
Effective Resolution 8.6
EM Map-Model Fitting and Refinement
Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Fitting Software
REAL FLEXIBLE FIT -- -- -- --
REAL FLEXIBLE FIT -- -- -- --