Gerty Cori Programme, Medical Faculty, University of Munster
EXC 1003 - CiM
ドイツ
German Research Foundation (DFG)
264061860
ドイツ
Germanys Excellence Strategy
EXC 2067/1-390729940
ドイツ
German Research Foundation (DFG)
448415290
ドイツ
Austrian Science Fund
P36187-B
オーストリア
引用
ジャーナル: Dev Cell / 年: 2024 タイトル: A metabolically controlled contact site between vacuoles and lipid droplets in yeast. 著者: Duy Trong Vien Diep / Javier Collado / Marie Hugenroth / Rebecca Martina Fausten / Louis Percifull / Mike Wälte / Christian Schuberth / Oliver Schmidt / Rubén Fernández-Busnadiego / Maria Bohnert / 要旨: The lipid droplet (LD) organization proteins Ldo16 and Ldo45 affect multiple aspects of LD biology in yeast. They are linked to the LD biogenesis machinery seipin, and their loss causes defects in LD ...The lipid droplet (LD) organization proteins Ldo16 and Ldo45 affect multiple aspects of LD biology in yeast. They are linked to the LD biogenesis machinery seipin, and their loss causes defects in LD positioning, protein targeting, and breakdown. However, their molecular roles remained enigmatic. Here, we report that Ldo16/45 form a tether complex with Vac8 to create vacuole lipid droplet (vCLIP) contact sites, which can form in the absence of seipin. The phosphatidylinositol transfer protein (PITP) Pdr16 is a further vCLIP-resident recruited specifically by Ldo45. While only an LD subpopulation is engaged in vCLIPs at glucose-replete conditions, nutrient deprivation results in vCLIP expansion, and vCLIP defects impair lipophagy upon prolonged starvation. In summary, Ldo16/45 are multifunctional proteins that control the formation of a metabolically regulated contact site. Our studies suggest a link between LD biogenesis and breakdown and contribute to a deeper understanding of how lipid homeostasis is maintained during metabolic challenges.
凍結剤: ETHANE-PROPANE / チャンバー内湿度: 80 % / チャンバー内温度: 297 K / 装置: FEI VITROBOT MARK IV / 詳細: Back-blotted.
詳細
Cells were plunge-frozen at 0.6 O.D600 concentration.
切片作成
集束イオンビーム - 装置: OTHER / 集束イオンビーム - イオン: OTHER / 集束イオンビーム - 電圧: 30 / 集束イオンビーム - 電流: 0.1 / 集束イオンビーム - 時間: 1000 / 集束イオンビーム - 温度: 78 K / 集束イオンビーム - Initial thickness: 4000 / 集束イオンビーム - 最終 厚さ: 200 集束イオンビーム - 詳細: The value given for _em_focused_ion_beam.instrument is Thermo Fisher Aquilos 2 FIB. This is not in a list of allowed values {'OTHER', 'DB235'} so OTHER is written into the XML file.