Reference: Camougrand N, et al. (2022) The Dep1 protein: A new regulator of mitophagy in yeast. Biochem Biophys Res Commun 635:218-226

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Abstract


Mitochondria play a crucial role in most eukaryotic cells. Mitophagy is a process that controls their quality and quantity within the cells. The outer mitochondrial membrane protein, Atg32, serves as the mitophagic receptor. It interacts with the Atg11 protein to initiate mitophagy and with the Atg8 protein to ensure the engulfment of mitochondria into the autophagosomes for elimination. The Atg32 protein is regulated at the transcriptional level but also by posttranslational modifications. In this study, we described a new regulator of mitophagy, the protein Dep1, identified as a part of the Rpd3L histone deacetylase complex. We showed that the Dep1 protein is localized in the nucleus and associated with mitochondria. This protein is needed for mitophagy and to regulate the transcription and expression of the Atg32 protein. The absence of this protein affects the mitophagy process induced by either starvation for nitrogen or the stationary phase of growth.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Camougrand N, Vigié P, Dompierre J, Massoni-Laporte A, Lasserre JP, Bhatia-Kiššová I
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