In vivo vizualisation of mono-ADP-ribosylation by dPARP16 upon amino-acid starvation

Angelica Aguilera-Gomez, Marinke M van Oorschot, Tineke Veenendaal, Catherine Rabouille

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Abstract

PARP catalysed ADP-ribosylation is a post-translational modification involved in several physiological and pathological processes, including cellular stress. In order to visualise both Poly-, and Mono-, ADP-ribosylation in vivo, we engineered specific fluorescent probes. Using them, we show that amino-acid starvation triggers an unprecedented display of mono-ADP-ribosylation that governs the formation of Sec body, a recently identified stress assembly that forms in Drosophila cells. We show that dPARP16 catalytic activity is necessary and sufficient for both amino-acid starvation induced mono-ADP-ribosylation and subsequent Sec body formation and cell survival. Importantly, dPARP16 catalyses the modification of Sec16, a key Sec body component, and we show that it is a critical event for the formation of this stress assembly. Taken together our findings establish a novel example for the role of mono-ADP-ribosylation in the formation of stress assemblies, and link this modification to a metabolic stress.

Original languageEnglish
Pages (from-to)23
Number of pages1
JournaleLife
Volume5
DOIs
Publication statusPublished - 22 Nov 2016

Keywords

  • ter sites poly(adp-ribose) proteins drosophila binding sec16 differentiation identification macrodomains regulator Life Sciences & Biomedicine - Other Topics

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