7TBM

Composite structure of the dilated human nuclear pore complex (NPC) generated with a 37A in situ cryo-ET map of CD4+ T cell NPC


ELECTRON MICROSCOPY
Sample
Nuclear pore complex from human CD4+ T cells.
Specimen Preparation
Sample Aggregation StateCELL
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSUBTOMOGRAM AVERAGING
Number of Particles792
Reported Resolution (Å)37
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
DetailsAuthors state that the clashes between nucleoporin structures result from docking nucleoporin structures from different species into low-resolution cr ...Authors state that the clashes between nucleoporin structures result from docking nucleoporin structures from different species into low-resolution cryo-ET maps of intact NPCs without flexible fitting.
Data Acquisition
Detector TypeGATAN K2 QUANTUM (4k x 4k)
Electron Dose (electrons/Å**2)4
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)2000
Maximum Defocus (nm)4500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION