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EBI2, GPR18, and GPR17 – Three Structurally Related but Biologically Distinct 7TM Receptors

[ Vol. 11 , Issue. 6 ]


Kristine Norregaard, Tau Benned-Jensen and Mette Marie Rosenkilde   Pages 618 - 628 ( 11 )


7TM receptors constitute one of the largest superfamilies of proteins in the human genome. They are involved in a large number of physiological and pathological processes and thus represent major and important drug targets for the pharmaceutical industry. Although the majority have been deorphanized, many remain orphan and these orphan receptors constitute a large pool of potential drug targets. This review focuses on one of these orphan targets, the Epstein-Barr Virus – induced receptor 2, EBI2 (or GPR183), together with two structurally related receptors, GPR17 and GPR18. The pharmacology and “druggability” of these three receptors are reviewed through a thorough description of their structural and functional properties and in vivo biology together with a status of currently available ligands for these receptors.


GPCR, activation mechanism, 7TM receptors, EBI2, GPR18, GPR17, constitutive activity, deorphanization, orphan receptors, druggability, chromosomal region 13q32.3, chemogenomic analysis, pertussis toxin, –, dependent manner, phosphatidylinositol turnover, posttransplant lymphoproliferative diseases


Laboratory for Molecular Pharmacology, Department of Neuroscience and Pharmacology, Faculty of Health sciences, Copenhagen University, Blegdamsvej 3, 2200 Copenhagen N, Denmark.

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