Reference: Innokentev A and Kanki T (2021) Mitophagy in Yeast: Molecular Mechanism and Regulation. Cells 10(12)

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Abstract


Mitophagy is a type of autophagy that selectively degrades mitochondria. Mitochondria, known as the "powerhouse of the cell", supply the majority of the energy required by cells. During energy production, mitochondria produce reactive oxygen species (ROS) as byproducts. The ROS damage mitochondria, and the damaged mitochondria further produce mitochondrial ROS. The increased mitochondrial ROS damage cellular components, including mitochondria themselves, and leads to diverse pathologies. Accordingly, it is crucial to eliminate excessive or damaged mitochondria to maintain mitochondrial homeostasis, in which mitophagy is believed to play a major role. Recently, the molecular mechanism and physiological role of mitophagy have been vigorously studied in yeast and mammalian cells. In yeast, Atg32 and Atg43, mitochondrial outer membrane proteins, were identified as mitophagy receptors in budding yeast and fission yeast, respectively. Here we summarize the molecular mechanisms of mitophagy in yeast, as revealed by the analysis of Atg32 and Atg43, and review recent progress in our understanding of mitophagy induction and regulation in yeast.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't | Review
Authors
Innokentev A, Kanki T
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