| RRC ID |
76325
|
| Author |
Watterson A, Tatge L, Wajahat N, Arneaud SLB, Solano Fonseca R, Beheshti ST, Metang P, Mihelakis M, Zuurbier KR, Corley CD, Dehghan I, McDonald JG, Douglas PM.
|
| Title |
Intracellular lipid surveillance by small G protein geranylgeranylation.
|
| Journal |
Nature
|
| Abstract |
Imbalances in lipid homeostasis can have deleterious effects on health1,2. 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.
|
| Volume |
605(7911)
|
| Pages |
736-740
|
| Published |
2022-5-1
|
| DOI |
10.1038/s41586-022-04729-7
|
| PII |
10.1038/s41586-022-04729-7
|
| PMID |
35585236
|
| PMC |
PMC9885440
|
| MeSH |
Animals
Caenorhabditis elegans / metabolism
Caenorhabditis elegans Proteins* / genetics
Caenorhabditis elegans Proteins* / metabolism
Lipids
Monomeric GTP-Binding Proteins* / metabolism
Protein Prenylation
Receptors, Cytoplasmic and Nuclear / metabolism
|
| Resource |
| C.elegans |
tm3410 |
