This gene encodes MC3, a G-protein coupled receptor for melanocyte-stimulating hormone and adrenocorticotropic hormone that is expressed in tissues other than the adrenal cortex and melanocytes. This gene maps to the same region as the locus for benign neonatal epilepsy. Mice deficient for this gene have increased fat mass despite decreased food intake suggesting a role for this gene product in the regulation of energy homeostasis.[2]
Research
Studies performed by the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), found that two specific polymorphisms in the MC3R gene may be associated with pediatric obesity and greater body mass because of greater energy intake. Children who were homozygous for C17A + G241A consumed approximately 38% more than those who did not contain aforementioned polymorphisms. The study concluded that these genetic variants did not affect energy expenditure.[3]
↑Gantz I, Konda Y, Tashiro T, Shimoto Y, Miwa H, Munzert G, Watson SJ, DelValle J, Yamada T (April 1993). "Molecular cloning of a novel melanocortin receptor". The Journal of Biological Chemistry. 268 (11): 8246–50. PMID8463333.
Magenis RE, Smith L, Nadeau JH, Johnson KR, Mountjoy KG, Cone RD (August 1994). "Mapping of the ACTH, MSH, and neural (MC3 and MC4) melanocortin receptors in the mouse and human". Mammalian Genome. 5 (8): 503–8. doi:10.1007/BF00369320. PMID7949735.
Konda Y, Gantz I, DelValle J, Shimoto Y, Miwa H, Yamada T (May 1994). "Interaction of dual intracellular signaling pathways activated by the melanocortin-3 receptor". The Journal of Biological Chemistry. 269 (18): 13162–6. PMID8175743.
Gantz I, Tashiro T, Barcroft C, Konda Y, Shimoto Y, Miwa H, Glover T, Munzert G, Yamada T (October 1993). "Localization of the genes encoding the melanocortin-2 (adrenocorticotropic hormone) and melanocortin-3 receptors to chromosomes 18p11.2 and 20q13.2-q13.3 by fluorescence in situ hybridization". Genomics. 18 (1): 166–7. doi:10.1006/geno.1993.1448. PMID8276410.
Yang YK, Ollmann MM, Wilson BD, Dickinson C, Yamada T, Barsh GS, Gantz I (March 1997). "Effects of recombinant agouti-signaling protein on melanocortin action". Molecular Endocrinology. 11 (3): 274–80. doi:10.1210/me.11.3.274. PMID9058374.
Tota MR, Smith TS, Mao C, MacNeil T, Mosley RT, Van der Ploeg LH, Fong TM (January 1999). "Molecular interaction of Agouti protein and Agouti-related protein with human melanocortin receptors". Biochemistry. 38 (3): 897–904. doi:10.1021/bi9815602. PMID9893984.
McNulty JC, Thompson DA, Bolin KA, Wilken J, Barsh GS, Millhauser GL (December 2001). "High-resolution NMR structure of the chemically-synthesized melanocortin receptor binding domain AGRP(87-132) of the agouti-related protein". Biochemistry. 40 (51): 15520–7. doi:10.1021/bi0117192. PMID11747427.
Lee YS, Poh LK, Loke KY (March 2002). "A novel melanocortin 3 receptor gene (MC3R) mutation associated with severe obesity". The Journal of Clinical Endocrinology and Metabolism. 87 (3): 1423–6. doi:10.1210/jc.87.3.1423. PMID11889220.
Wong J, Love DR, Kyle C, Daniels A, White M, Stewart AW, Schnell AH, Elston RC, Holdaway IM, Mountjoy KG (October 2002). "Melanocortin-3 receptor gene variants in a Maori kindred with obesity and early onset type 2 diabetes". Diabetes Research and Clinical Practice. 58 (1): 61–71. doi:10.1016/S0168-8227(02)00126-2. PMID12161058.
Rached M, Buronfosse A, Begeot M, Penhoat A (August 2004). "Inactivation and intracellular retention of the human I183N mutated melanocortin 3 receptor associated with obesity". Biochimica et Biophysica Acta. 1689 (3): 229–34. doi:10.1016/j.bbadis.2004.03.009. PMID15276649.
Tao YX, Segaloff DL (August 2004). "Functional characterization of melanocortin-3 receptor variants identify a loss-of-function mutation involving an amino acid critical for G protein-coupled receptor activation". The Journal of Clinical Endocrinology and Metabolism. 89 (8): 3936–42. doi:10.1210/jc.2004-0367. PMID15292330.
Lapinsh M, Veiksina S, Uhlén S, Petrovska R, Mutule I, Mutulis F, Yahorava S, Prusis P, Wikberg JE (January 2005). "Proteochemometric mapping of the interaction of organic compounds with melanocortin receptor subtypes". Molecular Pharmacology. 67 (1): 50–9. doi:10.1124/mol.104.002857. PMID15470082.
Mandrika I, Petrovska R, Wikberg J (January 2005). "Melanocortin receptors form constitutive homo- and heterodimers". Biochemical and Biophysical Research Communications. 326 (2): 349–54. doi:10.1016/j.bbrc.2004.11.036. PMID15582585.
de Krom M, de Rijke CE, Hendriks J, van Engeland H, van Elburg AA, Adan RA (December 2005). "Mutation analysis of the agouti related protein promoter region and the melanocortin-3 receptor in anorexia nervosa patients". Psychiatric Genetics. 15 (4): 237. doi:10.1097/00041444-200512000-00003. PMID16314751.
Chen M, Aprahamian CJ, Celik A, Georgeson KE, Garvey WT, Harmon CM, Yang Y (January 2006). "Molecular characterization of human melanocortin-3 receptor ligand-receptor interaction". Biochemistry. 45 (4): 1128–37. doi:10.1021/bi0521792. PMID16430209.
External links
"Melanocortin Receptors: MC3". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology.