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- W2093722302 abstract "CRM1-mediated protein export is an important determinant of the nuclear accumulation of many gene regulators. Here, we show that the NFκB transcription factor Dorsal is a substrate of CRM1 and requires the nucleoporin Nup214 for its nuclear translocation upon signaling. Nup214 bound to CRM1 directly and anchored it to the nuclear envelope. In nup214 mutants CRM1 accumulated in the nucleus and NES-protein export was enhanced. Nup214 formed complexes with Nup88 and CRM1 in vivo and Nup214 protected Nup88 from degradation at the nuclear rim. In turn, Nup88 was sufficient for targeting the complex to the nuclear pores. Overexpression experiments indicated that Nup214 alone attracts a fraction of CRM1 to the nuclear envelope but does not interfere with NES-GFP export. By contrast, overexpression of the Nup214-Nup88 complex trapped CRM1 and Dorsal to cytoplasmic foci and inhibited protein export and immune response activation. We hypothesize that variation in levels of the Nup214-Nup88 complex at the pore changes the amount of NPC-bound CRM1 and influences the relative strength and duration of NFκB signaling responses." @default.
- W2093722302 created "2016-06-24" @default.
- W2093722302 creator A5028586693 @default.
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- W2093722302 creator A5043694099 @default.
- W2093722302 creator A5059703816 @default.
- W2093722302 date "2006-11-01" @default.
- W2093722302 modified "2023-10-10" @default.
- W2093722302 title "The nucleoporin Nup214 sequesters CRM1 at the nuclear rim and modulates NFκB activation in<i>Drosophila</i>" @default.
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- W2093722302 doi "https://doi.org/10.1242/jcs.03201" @default.
- W2093722302 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/17032737" @default.
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