Crystal structure of a common GPCR-binding interface for G protein and arrestin.
Crystal structure of a common GPCR-binding interface for G protein and arrestin.
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G蛋白和阻滞蛋白的常见GPCR结合界面的晶体结构。
DOI:
10.1038/ncomms5801
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发表时间:
2014-09-10
影响因子:
16.6
通讯作者:
Scheerer, Patrick
中科院分区:
文献类型:
--
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
G-protein-coupled receptors (GPCRs) transmit extracellular signals to activate intracellular heterotrimeric G proteins (Gαβγ) and arrestins. For G protein signalling, the Gα C-terminus (GαCT) binds to a cytoplasmic crevice of the receptor that opens upon activation. A consensus motif is shared among GαCT from the Gi/Gt family and the ‘finger loop’ region (ArrFL1–4) of all four arrestins. Here we present a 2.75 Å crystal structure of ArrFL-1, a peptide analogue of the finger loop of rod photoreceptor arrestin, in complex with the prototypical GPCR rhodopsin. Functional binding of ArrFL to the receptor was confirmed by ultraviolet-visible absorption spectroscopy, competitive binding assays and Fourier transform infrared spectroscopy. For both GαCT and ArrFL, binding to the receptor crevice induces a similar reverse turn structure, although significant structural differences are seen at the rim of the binding crevice. Our results reflect both the common receptor-binding interface and the divergent biological functions of G proteins and arrestins. G-protein-coupled receptors (GPCRs) transmit signals through intracellular heterotrimeric G proteins and arrestins. Here, Szczepek et al. present the structure of a common binding interface for Gα and arrestin on rhodopsin to shed light on key interactions that mediate transduction of specific signals through a single GPCR.
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DOI:
10.1107/s0907444905036693
发表时间:
2006-01-01
影响因子:
2.2
作者:
Evans, P
通讯作者:
Evans, P
DOI:
10.1126/science.1215802
发表时间:
2012-03-02
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Liu JJ;Horst R;Katritch V;Stevens RC;Wüthrich K
通讯作者:
Wüthrich K
DOI:
10.1073/pnas.83.3.599
发表时间:
1986-02-01
影响因子:
11.1
作者:
FERRETTI, L;KARNIK, SS;OPRIAN, DD
通讯作者:
OPRIAN, DD
影响因子:
64.8
作者:
Choe, Hui-Woog;Kim, Yong Ju;Ernst, Oliver P.
通讯作者:
Ernst, Oliver P.
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH