Melanocortin_3_receptor

Melanocortin 3 receptor

Melanocortin 3 receptor

Mammalian protein found in Homo sapiens


Melanocortin 3 receptor (MC3R) is a protein that in humans is encoded by the MC3R gene.[5][6]

Quick Facts MC3R, Identifiers ...

Function

This gene encodes MC3R, a G-protein coupled receptor (GPCR) for melanocyte-stimulating hormone (MSH) and adrenocorticotropic hormone (ACTH) that is expressed in the brain. This gene maps to the same region as the locus for benign neonatal epilepsy. Mice deficient for this gene have increased fat mass, reduced lean mass and decreased food intake, all suggesting a role for the receptor in the regulation of energy homeostasis.[6] MC3R mutations has been linked to reduced growth rate during childhood and a delay in the age of puberty onset.[7]

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.[8]

Ligands

  • Ac-Val-Gln-(pI)DPhe-DTic-NH2, first MC3 selective agonist, 100x selectivity over MC4.[9]
  • Ac-Val-Gln-DBip-DTic-NH2, 140x selectivity over MC4.[10]
  • Pyrrolidine bis-cyclic guanidines, non-peptide small molecule MC3 agonists, good selectivity over MC4 but not over MC1 or MC5.[11]
  • SHU-9119, mixed MC3/MC4 antagonist.[12]

Evolution

Paralogue[13]

See also


References

  1. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  2. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  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. doi:10.1016/S0021-9258(18)53088-X. PMID 8463333.
  4. Lam, B.Y.H., Williamson, A., Finer, S. et al. MC3R links nutritional state to childhood growth and the timing of puberty. Nature (2021). doi:10.1038/s41586-021-04088-9
  5. Savastano DM, Tanofsky-Kraff M, Han JC, Ning C, Sorg RA, Roza CA, Wolkoff LE, Anandalingam K, Jefferson-George KS, Figueroa RE, Sanford EL, Brady S, Kozlosky M, Schoeller DA, Yanovski JA (October 2009). "Energy intake and energy expenditure among children with polymorphisms of the melanocortin-3 receptor". The American Journal of Clinical Nutrition. 90 (4): 912–20. doi:10.3945/ajcn.2009.27537. PMC 2744620. PMID 19656839.
  6. Fleming KA, Freeman KT, Powers MD, Santos RG, Debevec G, Giulianotti MA, et al. (March 2019). "Discovery of Polypharmacological Melanocortin-3 and -4 Receptor Probes and Identification of a 100-Fold Selective nM MC3R Agonist versus a μM MC4R Partial Agonist". Journal of Medicinal Chemistry. 62 (5): 2738–2749. doi:10.1021/acs.jmedchem.9b00053. PMC 6463894. PMID 30741545.
  7. Ericson MD, Shaikh R, Larson CM, Freeman KT, Haskell-Luevano C (January 2021). "Multiresidue Tetrapeptide Substitutions Yield a 140-fold Selective Melanocortin-3 over Melanocortin-4 Receptor Agonist". ACS Medicinal Chemistry Letters. 12 (1): 115–120. doi:10.1021/acsmedchemlett.0c00561. PMC 7812669. PMID 33488972.
  8. Cai M, Mayorov AV, Ying J, Stankova M, Trivedi D, Cabello C, Hruby VJ (August 2005). "Design of novel melanotropin agonists and antagonists with high potency and selectivity for human melanocortin receptors". Peptides. 26 (8): 1481–1485. doi:10.1016/j.peptides.2005.03.020. PMID 15876475. S2CID 45499654.

Further reading

This article incorporates text from the United States National Library of Medicine, which is in the public domain.



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