Pathophysiology of melanocortin receptors and their accessory proteins

Novoselova, Tatiana ORCID: https://orcid.org/0000-0002-2394-4667, Chan, Li F. and Clark, Adrian (2018) Pathophysiology of melanocortin receptors and their accessory proteins. Best Practice & Research Clinical Endocrinology & Metabolism, 32 (2) . pp. 93-106. ISSN 1521-690X [Article] (doi:10.1016/j.beem.2018.02.002)

Abstract

The melanocortin receptors (MCRs) and their accessory proteins (MRAPs) are involved in regulation of a diverse range of endocrine pathways. Genetic variants of these components result in phenotypic variation and disease. The MC1R is expressed in skin and variants in the MC1R gene are associated with ginger hair color. The MC2R mediates the action of ACTH in the adrenal gland to stimulate glucocorticoid production and MC2R mutations result in familial glucocorticoid deficiency (FGD). MC3R and MC4R are involved in metabolic regulation and their gene variants are associated with severe pediatric obesity, whereas the function of MC5R remains to be fully elucidated. MRAPs have been shown to modulate the function of MCRs and genetic variants in MRAPs are associated with diseases including FGD type 2 and potentially early onset obesity. This review provides an insight into recent advances in MCRs and MRAPs physiology, focusing on the disorders associated with their dysfunction

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