Structural basis for activation and allosteric modulation of full-length calcium-sensing receptor.
Structural basis for activation and allosteric modulation of full-length calcium-sensing receptor.
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全长钙敏感受体激活和变构调节的结构基础
DOI:
10.1126/sciadv.abg1483
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发表时间:
2021-06
期刊:
影响因子:
13.6
通讯作者:
Yang X
中科院分区:
文献类型:
--
作者:
Wen T;Wang Z;Chen X;Ren Y;Lu X;Xing Y;Lu J;Chang S;Zhang X;Shen Y;Yang X
Multiple structures of full-length calcium-sensing receptors reveal the mechanism of activation and allosteric modulation. Calcium-sensing receptor (CaSR) is a class C G protein–coupled receptor (GPCR) that plays an important role in calcium homeostasis and parathyroid hormone secretion. Here, we present multiple cryo–electron microscopy structures of full-length CaSR in distinct ligand-bound states. Ligands (Ca2+ and l-tryptophan) bind to the extracellular domain of CaSR and induce large-scale conformational changes, leading to the closure of two heptahelical transmembrane domains (7TMDs) for activation. The positive modulator (evocalcet) and the negative allosteric modulator (NPS-2143) occupy the similar binding pocket in 7TMD. The binding of NPS-2143 causes a considerable rearrangement of two 7TMDs, forming an inactivated TM6/TM6 interface. Moreover, a total of 305 disease-causing missense mutations of CaSR have been mapped to the structure in the active state, creating hotspot maps of five clinical endocrine disorders. Our results provide a structural framework for understanding the activation, allosteric modulation mechanism, and disease therapy for class C GPCRs.
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影响因子:
2.9
作者:
Huang, Yun;Zhou, Yubin;Castiblanco, Adriana;Yang, Wei;Brown, Edward M.;Yang, Jenny J.
通讯作者:
Yang, Jenny J.
影响因子:
64.8
作者:
通讯作者:
--
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:
14.9
作者:
Buchan, Daniel W. A.;Jones, David T.
通讯作者:
Jones, David T.
影响因子:
9.8
作者:
Dershem, Ridge;Gorvin, Caroline M.;Breitwieser, Gerda E.
通讯作者:
Breitwieser, Gerda E.