Intracellular lipid surveillance by small G protein geranylgeranylation.
Intracellular lipid surveillance by small G protein geranylgeranylation.
复制标题
DOI:
10.1038/s41586-022-04729-7
复制
发表时间:
2022-05
期刊:
影响因子:
64.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Imbalances in lipid homeostasis can have deleterious effects on health. Yet how cells sense metabolic demand due to lipid depletion and respond by increasing nutrient absorption remains unclear. Here we describe a mechanism for intracellular lipid surveillance in Caenorhabditis elegans that involves transcriptional inactivation of the nuclear hormone receptor NHR-49 through its cytosolic sequestration to endocytic vesicles via geranylgeranyl conjugation to the small G protein RAB-11.1. Defective de novo isoprenoid synthesis caused by lipid depletion limits RAB-11.1 geranylgeranylation, which promotes nuclear translocation of NHR-49 and activation of rab-11.2 transcription to enhance transporter residency at the plasma membrane. Thus, we identify a critical lipid sensed by the cell, its conjugated G protein, and the nuclear receptor whose dynamic interactions enable cells to sense metabolic demand due to lipid depletion and respond by increasing nutrient absorption and lipid metabolism.
登录
查看更多内容
影响因子:
64.8
作者:
Palm W;Thompson CB
通讯作者:
Thompson CB
影响因子:
64.5
作者:
SEABRA, MC;BROWN, MS;GOLDSTEIN, JL
通讯作者:
GOLDSTEIN, JL
影响因子:
6.4
作者:
Judge A;Dodd MS
通讯作者:
Dodd MS
影响因子:
11.8
作者:
Egge, Nathan;Arneaud, Sonja L. B.;Douglas, Peter M.
通讯作者:
Douglas, Peter M.
影响因子:
21.3
作者:
Winter, Julia Franziska;Hoepfner, Sebastian;Zerial, Marino
通讯作者:
Zerial, Marino