A lipid site shapes the agonist response of a pentameric ligand-gated ion channel.
A lipid site shapes the agonist response of a pentameric ligand-gated ion channel.
复制标题
脂质位点塑造五聚体配体门控离子通道的激动剂反应。
DOI:
10.1038/s41589-019-0369-4
复制
发表时间:
2019-12
影响因子:
14.8
通讯作者:
Ulens C
中科院分区:
文献类型:
--
作者:
Hénault CM;Govaerts C;Spurny R;Brams M;Estrada-Mondragon A;Lynch J;Bertrand D;Pardon E;Evans GL;Woods K;Elberson BW;Cuello LG;Brannigan G;Nury H;Steyaert J;Baenziger JE;Ulens C
Phospholipids are key components of cellular membranes and are emerging as important functional regulators of different membrane proteins, including pentameric ligand-gated ion channels (pLGICs). Here, we take advantage of the prokaryote channel ELIC (Erwinia ligand-gated ion channel) as a model to understand the determinants of phospholipid interactions in this family of receptors. A high-resolution structure of ELIC in a lipid-bound state reveals a phospholipid site at the lower half of pore-forming transmembrane helices M1 and M4 and at a nearby site for neurosteroids, cholesterol or general anesthetics. This site is shaped by an M4-helix kink and a Trp–Arg–Pro triad that is highly conserved in eukaryote GABAA/C and glycine receptors. A combined approach reveals that M4 is intrinsically flexible and that M4 deletions or disruptions of the lipid-binding site accelerate desensitization in ELIC, suggesting that lipid interactions shape the agonist response. Our data offer a structural context for understanding lipid modulation in pLGICs.
登录
查看更多内容
影响因子:
5
作者:
Cory-Wright, James;Alqazzaz, Mona;Lummis, Sarah C. R.
通讯作者:
Lummis, Sarah C. R.
DOI:
10.1073/pnas.1119268109
发表时间:
2012-04-17
影响因子:
11.1
作者:
Gonzalez-Gutierrez, Giovanni;Lukk, Tiit;Grosman, Claudio
通讯作者:
Grosman, Claudio
影响因子:
64.8
作者:
Hilf, Ricarda J. C.;Dutzler, Raimund
通讯作者:
Dutzler, Raimund
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
4.6
作者:
Domville JA;Baenziger JE
通讯作者:
Baenziger JE