Dual mechanisms of cholesterol-GPCR interactions that depend on membrane phospholipid composition.
Dual mechanisms of cholesterol-GPCR interactions that depend on membrane phospholipid composition.
复制标题
胆固醇-GPCR 相互作用的双重机制取决于膜磷脂的组成。
DOI:
10.1016/j.str.2023.05.001
复制
发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Eddy,MatthewT
中科院分区:
文献类型:
--
作者:
Ray,ArkaPrabha;Thakur,Naveen;Pour,NiloofarGopal;Eddy,MatthewT
Cholesterol is a critical component of mammalian cell membranes and an allosteric modulator of G protein-coupled receptors (GPCRs), but divergent views exist on the mechanisms by which cholesterol influences receptor functions. Leveraging the benefits of lipid nanodiscs, i.e., quantitative control of lipid composition, we observe distinct impacts of cholesterol in the presence and absence of anionic phospholipids on the function-related conformational dynamics of the human A2Aadenosine receptor (A2AAR). Direct receptor-cholesterol interactions drive activation of agonist-bound A2AAR in membranes containing zwitterionic phospholipids. Intriguingly, the presence of anionic lipids attenuates cholesterol's impact through direct interactions with the receptor, highlighting a more complex role for cholesterol that depends on membrane phospholipid composition. Targeted amino acid replacements at two frequently predicted cholesterol interaction sites showed distinct impacts of cholesterol at different receptor locations, demonstrating the ability to delineate different roles of cholesterol in modulating receptor signaling and maintaining receptor structural integrity.
登录
查看更多内容
影响因子:
2.9
作者:
D. C. Mitchell;Martin Straume;James L. Miller;B. Litman
通讯作者:
B. Litman
影响因子:
21.8
作者:
Abiko, Layara Akemi;Teixeira, Raphael Dias;Grzesiek, Stephan
通讯作者:
Grzesiek, Stephan
影响因子:
3.4
作者:
Eric Rouvière;C. Arnarez;Lewen Yang;E. Lyman
通讯作者:
Eric Rouvière;C. Arnarez;Lewen Yang;E. Lyman
影响因子:
3.9
作者:
YEAGLE, PL
通讯作者:
YEAGLE, PL
影响因子:
15
作者:
Eddy MT;Gao ZG;Mannes P;Patel N;Jacobson KA;Katritch V;Stevens RC;Wüthrich K
通讯作者:
Wüthrich K