Decoding the PTM-switchboard of Notch

Daniel Antfolk, Christian Antila, Kati Kemppainen, Sebastian K.J. Landor (Corresponding author), Cecilia Sahlgren (Corresponding author)

Research output: Contribution to journalReview articleAcademicpeer-review

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Abstract

The developmentally indispensable Notch pathway exhibits a high grade of pleiotropism in its biological output. Emerging evidence supports the notion of post-translational modifications (PTMs) as a modus operandi controlling dynamic fine-tuning of Notch activity. Although, the intricacy of Notch post-translational regulation, as well as how these modifications lead to multiples of divergent Notch phenotypes is still largely unknown, numerous studies show a correlation between the site of modification and the output. These include glycosylation of the extracellular domain of Notch modulating ligand binding, and phosphorylation of the PEST domain controlling half-life of the intracellular domain of Notch. Furthermore, several reports show that multiple PTMs can act in concert, or compete for the same sites to drive opposite outputs. However, further investigation of the complex PTM crosstalk is required for a complete understanding of the PTM-mediated Notch switchboard. In this review, we aim to provide a consistent and up-to-date summary of the currently known PTMs acting on the Notch signaling pathway, their functions in different contexts, as well as explore their implications in physiology and disease. Furthermore, we give an overview of the present state of PTM research methodology, and allude to a future with PTM-targeted Notch therapeutics.

Original languageEnglish
Article number118507
Number of pages21
JournalBiochimica et Biophysica Acta - Molecular Cell Research
Volume1866
Issue number12
DOIs
Publication statusPublished - 1 Dec 2019

Keywords

  • Glycosylation
  • Notch
  • Phosphorylation
  • Post-translational modifications
  • PTM

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