Abstract
The family C seven transmembrane (7TM) receptors constitutes a small and especially well characterized subfamily of the large 7TM receptor superfamily. Approximately 50% of current prescription drugs target 7TM receptors, this biologically important family represents the largest class of drug-targets today. It is well established that family C 7TM receptors form homo- or hetero-dimers on the cell surface of living cells. The large extra-cellular domains (ECD) have been crystallized as a dimer in the presence and absence of agonist. Upon agonist binding, the dimeric ECD undergoes large conformational changes that lead to receptor activation. Despite extensive studies of the receptor transmembrane domain, several key features, including the exact organization of the complete receptor dimer, the sequence of events leading to receptor activation, and the functional significance of dimerization, have yet to be fully defined. This review presents the biochemical support for family C 7TM receptor dimerization and discusses its importance for receptor biosynthesis, surface expression, ligand binding and activation, since lessons learnt here may well be applicable to the whole superfamily of 7TM receptors.
Keywords: Family C, GPCR, dimerization, activation
Endocrine, Metabolic & Immune Disorders - Drug Targets
Title: Family C 7TM Receptor Dimerization and Activation
Volume: 6 Issue: 1
Author(s): Marie M. Bonde, Soren P. Sheikh and Jakob L. Hansen
Affiliation:
Keywords: Family C, GPCR, dimerization, activation
Abstract: The family C seven transmembrane (7TM) receptors constitutes a small and especially well characterized subfamily of the large 7TM receptor superfamily. Approximately 50% of current prescription drugs target 7TM receptors, this biologically important family represents the largest class of drug-targets today. It is well established that family C 7TM receptors form homo- or hetero-dimers on the cell surface of living cells. The large extra-cellular domains (ECD) have been crystallized as a dimer in the presence and absence of agonist. Upon agonist binding, the dimeric ECD undergoes large conformational changes that lead to receptor activation. Despite extensive studies of the receptor transmembrane domain, several key features, including the exact organization of the complete receptor dimer, the sequence of events leading to receptor activation, and the functional significance of dimerization, have yet to be fully defined. This review presents the biochemical support for family C 7TM receptor dimerization and discusses its importance for receptor biosynthesis, surface expression, ligand binding and activation, since lessons learnt here may well be applicable to the whole superfamily of 7TM receptors.
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Cite this article as:
Bonde M. Marie, Sheikh P. Soren and Hansen L. Jakob, Family C 7TM Receptor Dimerization and Activation, Endocrine, Metabolic & Immune Disorders - Drug Targets 2006; 6 (1) . https://dx.doi.org/10.2174/187153006776056594
DOI https://dx.doi.org/10.2174/187153006776056594 |
Print ISSN 1871-5303 |
Publisher Name Bentham Science Publisher |
Online ISSN 2212-3873 |
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