• Medientyp: E-Artikel
  • Titel: Ubiquitin-dependent and -independent functions of OTULIN in cell fate control and beyond
  • Beteiligte: Weinelt, Nadine; van Wijk, Sjoerd J. L.
  • Erschienen: Springer Science and Business Media LLC, 2021
  • Erschienen in: Cell Death & Differentiation, 28 (2021) 2, Seite 493-504
  • Sprache: Englisch
  • DOI: 10.1038/s41418-020-00675-x
  • ISSN: 1350-9047; 1476-5403
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  • Beschreibung: <jats:title>Abstract</jats:title><jats:p>Ubiquitination, and its control by deubiquitinating enzymes (DUBs), mediates protein stability, function, signaling and cell fate. The ovarian tumor (OTU) family DUB OTULIN (FAM105B) exclusively cleaves linear (Met1-linked) poly-ubiquitin chains and plays important roles in auto-immunity, inflammation and infection. OTULIN regulates Met1-linked ubiquitination downstream of tumor necrosis factor receptor 1 (TNFR1), toll-like receptor (TLR) and nucleotide-binding and oligomerization domain-containing protein 2 (NOD2) receptor activation and interacts with the Met1 ubiquitin-specific linear ubiquitin chain assembly complex (LUBAC) E3 ligase. However, despite extensive research efforts, the receptor and cytosolic roles of OTULIN and the distributions of multiple Met1 ubiquitin-associated E3-DUB complexes in the regulation of cell fate still remain controversial and unclear. Apart from that, novel ubiquitin-independent OTULIN functions have emerged highlighting an even more complex role of OTULIN in cellular homeostasis. For example, OTULIN interferes with endosome-to-plasma membrane trafficking and the OTULIN-related pseudo-DUB OTULINL (FAM105A) resides at the endoplasmic reticulum (ER). Here, we discuss how OTULIN contributes to cell fate control and highlight novel ubiquitin-dependent and -independent functions.</jats:p>
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