ELECTRON MICROSCOPY

Sample

crosslinked wild-type NL4-3 HIV-1 Intasome

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details Cryo-EM grids were prepared by freezing using a manual plunger in cold room at 4C
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 22780
Reported Resolution (Å) 8
Resolution Method OTHER
Other Details 3D FSC server is used to compute map-model resolution at the threshold of 0.5. This reported resolution is not the map resolution because it is a composite map that does not have two half maps.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target Correlation coefficient
Overall B Value ?
Fitting Procedure ?
Details Domains of HIV-1 IN were rigid-body docked into cryo-EM density without any further refinement or adjustment of the coordinates. This rigid-body docked model was then truncated to poly-Alanine and deposited here.
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 60
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 2200
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 29000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION Leginon ?
CTF CORRECTION cryoSPARC 4.2
MODEL FITTING UCSF Chimera ?
INITIAL EULER ASSIGNMENT cryoSPARC 4.2
FINAL EULER ASSIGNMENT cryoSPARC 4.2
RECONSTRUCTION cryoSPARC 4.2
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?