7xtq: Difference between revisions
New page: '''Unreleased structure''' The entry 7xtq is ON HOLD Authors: Ma, L., Yang, F., Wu, X., Mao, C., Sun, J., Yu, X., Zhang, Y., Zhang, P. Description: Cryo-EM structure of the R399-bound ... |
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The | ==Cryo-EM structure of the R399-bound GPBAR-Gs complex== | ||
<StructureSection load='7xtq' size='340' side='right'caption='[[7xtq]], [[Resolution|resolution]] 3.20Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[7xtq]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7XTQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7XTQ FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.2Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=H8I:[2-[2,5-bis(chloranyl)phenoxy]pyridin-3-yl]-(3,4-dihydro-2~{H}-quinolin-1-yl)methanone'>H8I</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7xtq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7xtq OCA], [https://pdbe.org/7xtq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7xtq RCSB], [https://www.ebi.ac.uk/pdbsum/7xtq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7xtq ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The G protein-coupled bile acid receptor (GPBAR) is the membrane receptor for bile acids and a driving force of the liver-bile acid-microbiota-organ axis to regulate metabolism and other pathophysiological processes. Although GPBAR is an important therapeutic target for a spectrum of metabolic and neurodegenerative diseases, its activation has also been found to be linked to carcinogenesis, leading to potential side effects. Here, via functional screening, we found that two specific GPBAR agonists, R399 and INT-777, demonstrated strikingly different regulatory effects on the growth and apoptosis of non-small cell lung cancer (NSCLC) cells both in vitro and in vivo. Further mechanistic investigation showed that R399-induced GPBAR activation displayed an obvious bias for beta-arrestin 1 signaling, thus promoting YAP signaling activation to stimulate cell proliferation. Conversely, INT-777 preferentially activated GPBAR-Gs signaling, thus inactivating YAP to inhibit cell proliferation and induce apoptosis. Phosphorylation of GPBAR by GRK2 at S310/S321/S323/S324 sites contributed to R399-induced GPBAR-beta-arrestin 1 association. The cryoelectron microscopy (cryo-EM) structure of the R399-bound GPBAR-Gs complex enabled us to identify key interaction residues and pivotal conformational changes in GPBAR responsible for the arrestin signaling bias and cancer cell proliferation. In summary, we demonstrate that different agonists can regulate distinct functions of cell growth and apoptosis through biased GPBAR signaling and control of YAP activity in a NSCLC cell model. The delineated mechanism and structural basis may facilitate the rational design of GPBAR-targeting drugs with both metabolic and anticancer benefits. | |||
Structural basis and molecular mechanism of biased GPBAR signaling in regulating NSCLC cell growth via YAP activity.,Ma L, Yang F, Wu X, Mao C, Guo L, Miao T, Zang SK, Jiang X, Shen DD, Wei T, Zhou H, Wei Q, Li S, Shu Q, Feng S, Jiang C, Chu B, Du L, Sun JP, Yu X, Zhang Y, Zhang P Proc Natl Acad Sci U S A. 2022 Jul 19;119(29):e2117054119. doi: , 10.1073/pnas.2117054119. Epub 2022 Jul 15. PMID:35858343<ref>PMID:35858343</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 7xtq" style="background-color:#fffaf0;"></div> | ||
[[Category: | |||
[[Category: Sun | ==See Also== | ||
[[Category: | *[[Transducin 3D structures|Transducin 3D structures]] | ||
[[Category: | == References == | ||
[[Category: | <references/> | ||
[[Category: | __TOC__ | ||
[[Category: | </StructureSection> | ||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Synthetic construct]] | |||
[[Category: Ma L]] | |||
[[Category: Mao C]] | |||
[[Category: Sun J]] | |||
[[Category: Wu X]] | |||
[[Category: Yang F]] | |||
[[Category: Yu X]] | |||
[[Category: Zhang P]] | |||
[[Category: Zhang Y]] | |||