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- W4220683753 abstract "Both peroxisomes and lipid droplets regulate cellular lipid homeostasis. Direct inter-organellar contacts as well as novel roles for proteins associated with peroxisome or lipid droplets occur when cells are induced to liberate fatty acids from lipid droplets. We have shown a non-canonical role for a subset of peroxisome-assembly [Peroxin (Pex)] proteins in this process in Drosophila. Transmembrane proteins Pex3, Pex13 and Pex14 were observed to surround newly formed lipid droplets. Trafficking of Pex14 to lipid droplets was enhanced by loss of Pex19, which directs insertion of transmembrane proteins like Pex14 into the peroxisome bilayer membrane. Accumulation of Pex14 around lipid droplets did not induce changes to peroxisome size or number, and co-recruitment of the remaining Peroxins was not needed to assemble peroxisomes observed. Increasing the relative level of Pex14 surrounding lipid droplets affected the recruitment of Hsl lipase. Fat body-specific reduction of these lipid droplet-associated Peroxins caused a unique effect on larval fat body development and affected their survival on lipid-enriched or minimal diets. This revealed a heretofore unknown function for a subset of Pex proteins in regulating lipid storage. This article has an associated First Person interview with Kazuki Ueda, joint first author of the paper." @default.
- W4220683753 created "2022-04-03" @default.
- W4220683753 creator A5002995003 @default.
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- W4220683753 creator A5072195379 @default.
- W4220683753 creator A5074336279 @default.
- W4220683753 creator A5077455748 @default.
- W4220683753 date "2022-04-01" @default.
- W4220683753 modified "2023-10-12" @default.
- W4220683753 title "Recruitment of Peroxin 14 to lipid droplets affects lipid storage in <i>Drosophila</i>" @default.
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