Seipin concentrates distinct neutral lipids via interactions with their acyl chain carboxyl esters.
Seipin concentrates distinct neutral lipids via interactions with their acyl chain carboxyl esters.
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DOI:
10.1083/jcb.202112068
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发表时间:
2022-09-05
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影响因子:
--
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--
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Renne et al. show that Seipin promotes the formation of lipid droplets containing either triacylglycerol or steryl esters. It is proposed that interactions between hydroxyl-residues within the Seipin complex and neutral lipid carboxyl esters provide a general mechanism for Seipin-mediated LD formation. Lipid droplets (LDs) are essential for cellular lipid homeostasis by storing diverse neutral lipids (NLs), such as triacylglycerol (TAG), steryl esters (SE), and retinyl esters (RE). A proper assembly of TAG-containing LDs at the ER requires Seipin, a conserved protein often mutated in lipodystrophies. Here, we show that the yeast Seipin Sei1 and its partner Ldb16 also promote the storage of other NL in LDs. Importantly, this role of Sei1/Ldb16 is evolutionarily conserved as expression of human-Seipin restored normal SE-containing LDs in yeast Seipin mutants. As in the case of TAG, the formation of SE-containing LDs requires interactions between hydroxyl-residues in human Seipin or yeast Ldb16 with NL carboxyl esters. These findings provide a universal mechanism for Seipin-mediated LD formation and suggest a model for how Seipin distinguishes NLs from aliphatic phospholipid acyl chains in the center of the membrane bilayer.
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影响因子:
16.8
作者:
Arlt H;Sui X;Folger B;Adams C;Chen X;Remme R;Hamprecht FA;DiMaio F;Liao M;Goodman JM;Farese RV Jr;Walther TC
通讯作者:
Walther TC
DOI:
10.1083/jcb.201010111
发表时间:
2011-03-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
Adeyo O;Horn PJ;Lee S;Binns DD;Chandrahas A;Chapman KD;Goodman JM
通讯作者:
Goodman JM
影响因子:
3.4
作者:
Chorlay, Aymeric;Thiam, Abdou Rachid
通讯作者:
Thiam, Abdou Rachid
DOI:
10.1083/jcb.201505067
发表时间:
2015-10-26
期刊:
The Journal of cell biology
影响因子:
--
作者:
Choudhary V;Ojha N;Golden A;Prinz WA
通讯作者:
Prinz WA
影响因子:
5.5
作者:
Alessandri, Riccardo;Souza, Paulo C. T.;Marrink, Siewert J.
通讯作者:
Marrink, Siewert J.