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Constitutive signaling of the human cytomegalovirus-encoded receptor UL33 differs from that of its rat cytomegalovirus homolog R33 by promiscuous activation of G proteins of the Gq, Gi, and Gs classes.

Casarosa P, Gruijthuijsen YK, Michel D, Beisser PS, Holl J, Fitzsimons CP, Verzijl D, Bruggeman CA, Mertens T, Leurs R, Vink C, Smit MJ.

J Biol Chem. 2003 Dec 12;278(50):50010-23. Epub 2003 Sep 30.


The rat cytomegalovirus R33-encoded G protein-coupled receptor signals in a constitutive fashion.

Gruijthuijsen YK, Casarosa P, Kaptein SJ, Broers JL, Leurs R, Bruggeman CA, Smit MJ, Vink C.

J Virol. 2002 Feb;76(3):1328-38.


Constitutively active Gq/11-coupled receptors enable signaling by co-expressed G(i/o)-coupled receptors.

Bakker RA, Casarosa P, Timmerman H, Smit MJ, Leurs R.

J Biol Chem. 2004 Feb 13;279(7):5152-61. Epub 2003 Nov 10.


Specificity of Gbetagamma signaling to Kir3 channels depends on the helical domain of pertussis toxin-sensitive Galpha subunits.

Rusinova R, Mirshahi T, Logothetis DE.

J Biol Chem. 2007 Nov 23;282(47):34019-30. Epub 2007 Sep 14.


RGS17/RGSZ2, a novel regulator of Gi/o, Gz, and Gq signaling.

Mao H, Zhao Q, Daigle M, Ghahremani MH, Chidiac P, Albert PR.

J Biol Chem. 2004 Jun 18;279(25):26314-22. Epub 2004 Apr 19.


Identification of a novel site within G protein alpha subunits important for specificity of receptor-G protein interaction.

Heydorn A, Ward RJ, Jorgensen R, Rosenkilde MM, Frimurer TM, Milligan G, Kostenis E.

Mol Pharmacol. 2004 Aug;66(2):250-9.


Loss of association between activated Galpha q and Gbetagamma disrupts receptor-dependent and receptor-independent signaling.

Evanko DS, Thiyagarajan MM, Takida S, Wedegaertner PB.

Cell Signal. 2005 Oct;17(10):1218-28. Epub 2005 Jan 22.


G Protein activation without subunit dissociation depends on a G{alpha}(i)-specific region.

Frank M, Thümer L, Lohse MJ, Bünemann M.

J Biol Chem. 2005 Jul 1;280(26):24584-90. Epub 2005 May 2.


HCMV-encoded G-protein-coupled receptors as constitutively active modulators of cellular signaling networks.

Vischer HF, Leurs R, Smit MJ.

Trends Pharmacol Sci. 2006 Jan;27(1):56-63. Epub 2005 Dec 13. Review.


Constitutive serum response factor activation by the viral chemokine receptor homologue pUS28 is differentially regulated by Galpha(q/11) and Galpha(16).

Moepps B, Tulone C, Kern C, Minisini R, Michels G, Vatter P, Wieland T, Gierschik P.

Cell Signal. 2008 Aug;20(8):1528-37. doi: 10.1016/j.cellsig.2008.04.010. Epub 2008 Apr 24.


The R33 G protein-coupled receptor gene of rat cytomegalovirus plays an essential role in the pathogenesis of viral infection.

Beisser PS, Vink C, Van Dam JG, Grauls G, Vanherle SJ, Bruggeman CA.

J Virol. 1998 Mar;72(3):2352-63.


Common structural basis for constitutive activity of the ghrelin receptor family.

Holst B, Holliday ND, Bach A, Elling CE, Cox HM, Schwartz TW.

J Biol Chem. 2004 Dec 17;279(51):53806-17. Epub 2004 Sep 21.

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