Can Specific Protein-Lipid Interactions Stabilize an Active State of the Beta 2 Adrenergic Receptor?
Can Specific Protein-Lipid Interactions Stabilize an Active State of the Beta 2 Adrenergic Receptor?
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特定的蛋白质-脂质相互作用能否稳定 Beta 2 肾上腺素受体的活性状态?
DOI:
10.1016/j.bpj.2015.08.028
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发表时间:
2015
影响因子:
3.4
通讯作者:
A. Garcia
中科院分区:
文献类型:
--
作者:
Chris Neale;H. D. Herce;R. Pomès;A. Garcia
G-protein-coupled receptors are eukaryotic membrane proteins with broad biological and pharmacological relevance. Like all membrane-embedded proteins, their location and orientation are influenced by lipids, which can also impact protein function via specific interactions. Extensive simulations totaling 0.25 ms reveal a process in which phospholipids from the membrane's cytosolic leaflet enter the empty G-protein binding site of an activatedβ2 adrenergic receptor and form salt-bridge interactions that inhibit ionic lock formation and prolong active-state residency. Simulations of the receptor embedded in an anionic membrane show increased lipid binding, providing a molecular mechanism for the experimental observation that anionic lipids can enhance receptor activity. Conservation of the arginine component of the ionic lock among Rhodopsin-like G-protein-coupled receptors suggests that intracellular lipid ingression between receptor helices H6 and H7 may be a general mechanism for active-state stabilization.
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影响因子:
3.3
作者:
Klauda, Jeffery B.;Venable, Richard M.;Freites, J. Alfredo;O'Connor, Joseph W.;Tobias, Douglas J.;Mondragon-Ramirez, Carlos;Vorobyov, Igor;MacKerell, Alexander D., Jr.;Pastor, Richard W.
通讯作者:
Pastor, Richard W.
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
通讯作者:
--
影响因子:
16.6
作者:
Szczepek, Michal;Beyriere, Florent;Hofmann, Klaus Peter;Elgeti, Matthias;Kazmin, Roman;Rose, Alexander;Bartl, Franz J.;von Stetten, David;Heck, Martin;Sommer, Martha E.;Hildebrand, Peter W.;Scheerer, Patrick
通讯作者:
Scheerer, Patrick
影响因子:
15
作者:
Wacker, Daniel;Fenalti, Gustavo;Brown, Monica A.;Katritch, Vsevolod;Abagyan, Ruben;Cherezov, Vadim;Stevens, Raymond C.
通讯作者:
Stevens, Raymond C.
DOI:
10.1016/0005-2736(83)90442-x
发表时间:
1983
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Sessions,A;Horwitz,AF
通讯作者:
Horwitz,AF