FFAT motif phosphorylation controls formation and lipid transfer function of inter-organelle contacts.
FFAT motif phosphorylation controls formation and lipid transfer function of inter-organelle contacts.
复制标题
DOI:
10.15252/embj.2019104369
复制
发表时间:
2020-12-01
期刊:
影响因子:
--
通讯作者:
Alpy F
中科院分区:
文献类型:
--
作者:
Di Mattia T;Martinet A;Ikhlef S;McEwen AG;Nominé Y;Wendling C;Poussin-Courmontagne P;Voilquin L;Eberling P;Ruffenach F;Cavarelli J;Slee J;Levine TP;Drin G;Tomasetto C;Alpy F
Organelles are physically connected in membrane contact sites. The endoplasmic reticulum possesses three major receptors, VAP‐A, VAP‐B, and MOSPD2, which interact with proteins at the surface of other organelles to build contacts. VAP‐A, VAP‐B, and MOSPD2 contain an MSP domain, which binds a motif named FFAT (two phenylalanines in an acidic tract). In this study, we identified a non‐conventional FFAT motif where a conserved acidic residue is replaced by a serine/threonine. We show that phosphorylation of this serine/threonine is critical for non‐conventional FFAT motifs (named Phospho‐FFAT) to be recognized by the MSP domain. Moreover, structural analyses of the MSP domain alone or in complex with conventional and Phospho‐FFAT peptides revealed new mechanisms of interaction. Based on these new insights, we produced a novel prediction algorithm, which expands the repertoire of candidate proteins with a Phospho‐FFAT that are able to create membrane contact sites. Using a prototypical tethering complex made by STARD3 and VAP, we showed that phosphorylation is instrumental for the formation of ER‐endosome contacts, and their sterol transfer function. This study reveals that phosphorylation acts as a general switch for inter‐organelle contacts. Phosphorylation of a non‐conventional FFAT motif promotes ER‐endosome membrane contact sites and sterol exchange.
登录
查看更多内容
影响因子:
3.5
作者:
De Vos KJ;Mórotz GM;Stoica R;Tudor EL;Lau KF;Ackerley S;Warley A;Shaw CE;Miller CC
通讯作者:
Miller CC
影响因子:
2.5
作者:
Gabadinho J;Beteva A;Guijarro M;Rey-Bakaikoa V;Spruce D;Bowler MW;Brockhauser S;Flot D;Gordon EJ;Hall DR;Lavault B;McCarthy AA;McCarthy J;Mitchell E;Monaco S;Mueller-Dieckmann C;Nurizzo D;Ravelli RB;Thibault X;Walsh MA;Leonard GA;McSweeney SM
通讯作者:
McSweeney SM
影响因子:
4.8
作者:
Furuita, Kyoko;Jee, JunGoo;Kojima, Chojiro
通讯作者:
Kojima, Chojiro
影响因子:
4.8
作者:
Alpy, F;Latchumanan, VK;Tomasetto, C
通讯作者:
Tomasetto, C
影响因子:
4.8
作者:
Alpy, F;Wendling, C;Tomasetto, C
通讯作者:
Tomasetto, C