Study maps how sugar tags and importins keep nuclear pore barrier fluid
Researchers engineered a U-2 OS cell line with a fluorescently tagged nucleoporin (NUP96-mEGFP) and a doxycycline-inducible importin-β construct to study the nuclear pore complex's FG-repeat barrier in live cells. Using MINFLUX super-resolution imaging after inducing importin-β expression, they examined how glycosylation and importin binding affect the physical state of this barrier, which controls molecular traffic into and out of the nucleus.