Ligand recognition and G-protein coupling selectivity of cholecystokinin A receptor.
Ligand recognition and G-protein coupling selectivity of cholecystokinin A receptor.
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胆囊收缩素A受体的配体识别和G蛋白偶联选择性
DOI:
10.1038/s41589-021-00841-3
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发表时间:
2021-12
影响因子:
14.8
通讯作者:
Jiang Y
中科院分区:
文献类型:
--
作者:
Liu Q;Yang D;Zhuang Y;Croll TI;Cai X;Dai A;He X;Duan J;Yin W;Ye C;Zhou F;Wu B;Zhao Q;Xu HE;Wang MW;Jiang Y
Cholecystokinin A receptor (CCKAR) belongs to family A G-protein-coupled receptors and regulates nutrient homeostasis upon stimulation by cholecystokinin (CCK). It is an attractive drug target for gastrointestinal and metabolic diseases. One distinguishing feature of CCKAR is its ability to interact with a sulfated ligand and to couple with divergent G-protein subtypes, including Gs, Giand Gq. However, the basis for G-protein coupling promiscuity and ligand recognition by CCKAR remains unknown. Here, we present three cryo-electron microscopy structures of sulfated CCK-8-activated CCKAR in complex with Gs, Giand Gqheterotrimers, respectively. CCKAR presents a similar conformation in the three structures, whereas conformational differences in the ‘wavy hook’ of the Gα subunits and ICL3 of the receptor serve as determinants in G-protein coupling selectivity. Our findings provide a framework for understanding G-protein coupling promiscuity by CCKAR and uncover the mechanism of receptor recognition by sulfated CCK-8.
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影响因子:
16.6
作者:
Hong C;Byrne NJ;Zamlynny B;Tummala S;Xiao L;Shipman JM;Partridge AT;Minnick C;Breslin MJ;Rudd MT;Stachel SJ;Rada VL;Kern JC;Armacost KA;Hollingsworth SA;O'Brien JA;Hall DL;McDonald TP;Strickland C;Brooun A;Soisson SM;Hollenstein K
通讯作者:
Hollenstein K
影响因子:
64.5
作者:
Hauser AS;Chavali S;Masuho I;Jahn LJ;Martemyanov KA;Gloriam DE;Babu MM
通讯作者:
Babu MM
影响因子:
64.5
作者:
Inoue, Asuka;Raimondi, Francesco;Russell, Robert B.
通讯作者:
Russell, Robert B.
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
7.3
作者:
Archer-Lahlou, E;Tikhonova, I;Fourmy, D
通讯作者:
Fourmy, D