Structural basis and mechanism of activation of two different families of G proteins by the same GPCR.
Structural basis and mechanism of activation of two different families of G proteins by the same GPCR.
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DOI:
10.1038/s41594-021-00679-2
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发表时间:
2021-11
影响因子:
16.8
通讯作者:
Huang XY
中科院分区:
文献类型:
--
作者:
Alegre KO;Paknejad N;Su M;Lou JS;Huang J;Jordan KD;Eng ET;Meyerson JR;Hite RK;Huang XY
The β1-adrenergic receptor (β1-AR) can activate two families of G proteins. When coupled to Gs, β1-AR increases cardiac output, and coupling to Gi leads to decreased responsiveness in myocardial infarction. By comparative structural analysis of turkey β1-AR complexed with either Gi or Gs, we investigate how a single G-protein-coupled receptor simultaneously signals through two G proteins. We find that, although the critical receptor-interacting C-terminal α5-helices on Gαi and Gαs interact similarly with β1-AR, the overall interacting modes between β1-AR and G proteins vary substantially. Functional studies reveal the importance of the differing interactions and provide evidence that the activation efficacy of G proteins by β1-AR is determined by the entire three-dimensional interaction surface, including intracellular loops 2 and 4 (ICL2 and ICL4).
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影响因子:
3.6
作者:
Baker, Jillian G.;Proudman, Richard G. W.;Tate, Christopher G.
通讯作者:
Tate, Christopher G.
影响因子:
64.8
作者:
Koehl A;Hu H;Maeda S;Zhang Y;Qu Q;Paggi JM;Latorraca NR;Hilger D;Dawson R;Matile H;Schertler GFX;Granier S;Weis WI;Dror RO;Manglik A;Skiniotis G;Kobilka BK
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Kobilka BK
影响因子:
5.9
作者:
Jelinek V;Mösslein N;Bünemann M
通讯作者:
Bünemann M
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:
64.8
作者:
CONKLIN, BR;FARFEL, Z;BOURNE, HR
通讯作者:
BOURNE, HR