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- W2051967478 abstract "Mitofusins (Mfns) mediate the fusion of mitochondrial membranes. However, little is known about how Mfns are regulated to control mitochondrial fusion, which is a multistep process requiring tethering and docking of the outer membranes of two mitochondria. In this study, we report that guanine nucleotide binding protein-β subunit 2 (Gβ2), a WD40 repeats protein and a member of the β-subunits of the heterotrimeric G proteins, has a crucial function in mitochondrial fusion. Gβ2 was found to be enriched on the surface of mitochondria and interacted with mitofusin 1 (Mfn1) specifically. Gβ2 also regulated the mobility of Mfn1 on the surface of the mitochondrial membrane and affected the mitochondrial fusion. Depletion of endogenous Gβ2 resulted in mitochondrial fragmentation, which could be rescued by exogenous Gβ2. These findings have thus uncovered a novel role of Gβ2 in regulating mitochondrial fusion through its interaction with Mfn1. Little is known about the regulation of mitofusin proteins that are involved in the fusion of mitochondrial membranes. In this study, the authors report that a heterotrimeric G protein, Gβ-subunit 2, can interact with mitofusin 1, and is involved in the regulation of mitochondrial fusion." @default.
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- W2051967478 date "2010-10-19" @default.
- W2051967478 modified "2023-09-27" @default.
- W2051967478 title "G-protein β2 subunit interacts with mitofusin 1 to regulate mitochondrial fusion" @default.
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- W2051967478 doi "https://doi.org/10.1038/ncomms1099" @default.
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