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- W2893757928 abstract "Coenzyme Q10 (CoQ10) is a redox molecule critical for the proper function of energy metabolism and antioxidant defenses. Despite its essential role in cellular metabolism, the regulation of CoQ10 biosynthesis in humans remains mostly unknown. Herein, we determined that PPTC7 is a regulatory protein of CoQ10 biosynthesis required for human cell survival. We demonstrated by in vitro approaches that PPTC7 is a bona fide protein phosphatase that dephosphorylates the human COQ7. Expression modulation experiments determined that human PPTC7 dictates cellular CoQ10 content. Using two different approaches (PPTC7 over-expression and caloric restriction), we demonstrated that PPTC7 facilitates and improves the human cell adaptation to respiratory conditions. Moreover, we determined that the physiological role of PPTC7 takes place in the adaptation to starvation and pro-oxidant conditions, facilitating the induction of mitochondrial metabolism while preventing the accumulation of ROS. Here we unveil the first post-translational mechanism regulating CoQ10 biosynthesis in humans and propose targeting the induction of PPTC7 activity/expression for the treatment of CoQ10-related mitochondrial diseases." @default.
- W2893757928 created "2018-10-05" @default.
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- W2893757928 date "2018-11-01" @default.
- W2893757928 modified "2023-10-14" @default.
- W2893757928 title "The mitochondrial phosphatase PPTC7 orchestrates mitochondrial metabolism regulating coenzyme Q10 biosynthesis" @default.
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- W2893757928 doi "https://doi.org/10.1016/j.bbabio.2018.09.369" @default.
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