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TAK1 converts Sequestosome 1/p62 from an autophagy receptor to a signaling platform

Permanent lenke
https://hdl.handle.net/10037/17778
DOI
https://doi.org/10.15252/embr.201846238
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article.pdf (20.83Mb)
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Dato
2019-07-25
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Forfatter
Kehl, Stephanie R; Soos, Brandy-Lee A; Saha, Bhaskar; Choi, Seong Won; Herren, Anthony W; Johansen, Terje; Mandell, Michael A
Sammendrag
The protein p62/Sequestosome 1 (p62) has been described as a selective autophagy receptor and independently as a platform for pro‐inflammatory and other intracellular signaling. How these seemingly disparate functional roles of p62 are coordinated has not been resolved. Here, we show that TAK1, a kinase involved in immune signaling, negatively regulates p62 action in autophagy. TAK1 reduces p62 localization to autophagosomes, dampening the autophagic degradation of both p62 and p62‐directed autophagy substrates. TAK1 also relocalizes p62 into dynamic cytoplasmic bodies, a phenomenon that accompanies the stabilization of TAK1 complex components. On the other hand, p62 facilitates the assembly and activation of TAK1 complexes, suggesting a connection between p62's signaling functions and p62 body formation. Thus, TAK1 governs p62 action, switching it from an autophagy receptor to a signaling platform. This ability of TAK1 to disable p62 as an autophagy receptor may allow certain autophagic substrates to accumulate when needed for cellular functions.
Forlag
EMBO Press
Sitering
Kehl, Soos, Saha, Choi SW, Herren AW, Johansen T, Mandell MA. TAK1 converts Sequestosome 1/p62 from an autophagy receptor to a signaling platform. EMBO Reports. 2019;20(9)
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  • Artikler, rapporter og annet (medisinsk biologi) [1103]
Copyright 2019 The Author(s)

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