Melatonin receptor 1A

MTNR1A
Identifiers
Aliases	MTNR1A, MEL-1A-R, MT1, Melatonin receptor 1A
External IDs	OMIM: 600665; MGI: 102967; HomoloGene: 21207; GeneCards: MTNR1A; OMA:MTNR1A - orthologs
Gene location (Human)
Chr.	Chromosome 4 (human)
End	186,555,567 bp
Gene location (Mouse)
Chr.	Chromosome 8 (mouse)
End	45,541,543 bp
RNA expression pattern
	Top expressed in
	testicle; ; palpebral conjunctiva; ; rectum; ; islet of Langerhans; ; human kidney; ; appendix; ; gallbladder; ; cerebellar cortex; ; cerebellar hemisphere; ; mucosa of transverse colon;
	Top expressed in
	lens; ; embryo; ; embryo; ; epithelium of lens; ; suprachiasmatic nucleus; ; spermatid; ; superior cervical ganglion; ; liver; ; left lobe of liver; ; duodenum;
	More reference expression data
	More reference expression data
Gene ontology
Molecular function	hormone binding; G protein-coupled receptor activity; organic cyclic compound binding; signal transducer activity; protein binding; melatonin receptor activity;
Cellular component	integral component of membrane; membrane; receptor complex; integral component of plasma membrane; plasma membrane;
Biological process	G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger; mating behavior; signal transduction; circadian rhythm; G protein-coupled receptor signaling pathway; adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway;
	Sources:Amigo / QuickGO
Orthologs
	4543
	17773
	ENSG00000168412
	ENSMUSG00000054764
	P48039
	Q61184
	NM_005958
	NM_008639
	NP_005949
	NP_032665
	Wikidata
View/Edit Human	View/Edit Mouse

Melatonin receptor type 1A is a protein that in humans is encoded by the MTNR1A gene.^[5]^[6]

Function

This gene encodes the MT₁ protein, one of two high-affinity forms of a receptor for melatonin, the primary hormone secreted by the pineal gland. This receptor is a G protein-coupled, 7-transmembrane receptor that is responsible for melatonin effects on mammalian circadian rhythm and reproductive alterations affected by day length. The receptor is an integral membrane protein that is readily detectable and localized to two specific regions of the brain. The hypothalamic suprachiasmatic nucleus appears to be involved in circadian rhythm while the hypophysial pars tuberalis may be responsible for the reproductive effects of melatonin.^[6]

Ligands

Melatonin – full agonist
Afobazole – agonist
Agomelatine – agonist

References

Brzezinski A (Jan 1997). "Melatonin in humans". The New England Journal of Medicine. 336 (3): 186–95. doi:10.1056/NEJM199701163360306. PMID 8988899.
Khan AU, Olson DL (Aug 1975). "Physical therapy and exercise-induced bronchospasm". Physical Therapy. 55 (8): 878–81. doi:10.1093/ptj/55.8.878. PMID 1144527.
Reppert SM, Weaver DR, Ebisawa T (Nov 1994). "Cloning and characterization of a mammalian melatonin receptor that mediates reproductive and circadian responses". Neuron. 13 (5): 1177–85. doi:10.1016/0896-6273(94)90055-8. PMID 7946354. S2CID 19805481.
Witt-Enderby PA, Dubocovich ML (Jul 1996). "Characterization and regulation of the human ML1A melatonin receptor stably expressed in Chinese hamster ovary cells". Molecular Pharmacology. 50 (1): 166–74. PMID 8700109.
Witt-Enderby PA, Masana MI, Dubocovich ML (Jul 1998). "Physiological exposure to melatonin supersensitizes the cyclic adenosine 3',5'-monophosphate-dependent signal transduction cascade in Chinese hamster ovary cells expressing the human mt1 melatonin receptor". Endocrinology. 139 (7): 3064–71. doi:10.1210/endo.139.7.6102. PMID 9645677.
Ebisawa T, Kajimura N, Uchiyama M, Katoh M, Sekimoto M, Watanabe T, Ozeki Y, Ikeda M, Jodoi T, Sugishita M, Iwase T, Kamei Y, Kim K, Shibui K, Kudo Y, Yamada N, Toyoshima R, Okawa M, Takahashi K, Yamauchi T (Sep 1999). "Alleic variants of human melatonin 1a receptor: function and prevalence in subjects with circadian rhythm sleep disorders". Biochemical and Biophysical Research Communications. 262 (3): 832–7. doi:10.1006/bbrc.1999.1308. PMID 10471411.
Brydon L, Roka F, Petit L, de Coppet P, Tissot M, Barrett P, Morgan PJ, Nanoff C, Strosberg AD, Jockers R (Dec 1999). "Dual signaling of human Mel1a melatonin receptors via G(i2), G(i3), and G(q/11) proteins". Molecular Endocrinology. 13 (12): 2025–38. doi:10.1210/me.13.12.2025. PMID 10598579.
Niles LP, Wang J, Shen L, Lobb DK, Younglai EV (Oct 1999). "Melatonin receptor mRNA expression in human granulosa cells". Molecular and Cellular Endocrinology. 156 (1–2): 107–10. doi:10.1016/S0303-7207(99)00135-5. PMID 10612428. S2CID 42730113.
Song CK, Bartness TJ (Aug 2001). "CNS sympathetic outflow neurons to white fat that express MEL receptors may mediate seasonal adiposity". American Journal of Physiology. Regulatory, Integrative and Comparative Physiology. 281 (2): R666–72. doi:10.1152/ajpregu.2001.281.2.R666. PMID 11448873. S2CID 15384503.
Roy D, Angelini NL, Fujieda H, Brown GM, Belsham DD (Nov 2001). "Cyclical regulation of GnRH gene expression in GT1-7 GnRH-secreting neurons by melatonin". Endocrinology. 142 (11): 4711–20. doi:10.1210/en.142.11.4711. PMID 11606436.
Savaskan E, Olivieri G, Meier F, Brydon L, Jockers R, Ravid R, Wirz-Justice A, Müller-Spahn F (Jan 2002). "Increased melatonin 1a-receptor immunoreactivity in the hippocampus of Alzheimer's disease patients". Journal of Pineal Research. 32 (1): 59–62. doi:10.1034/j.1600-079x.2002.00841.x. PMID 11841602. S2CID 37172611.
Savaskan E, Wirz-Justice A, Olivieri G, Pache M, Kräuchi K, Brydon L, Jockers R, Müller-Spahn F, Meyer P (Apr 2002). "Distribution of melatonin MT1 receptor immunoreactivity in human retina". The Journal of Histochemistry and Cytochemistry. 50 (4): 519–26. doi:10.1177/002215540205000408. PMID 11897804.
Ayoub MA, Couturier C, Lucas-Meunier E, Angers S, Fossier P, Bouvier M, Jockers R (Jun 2002). "Monitoring of ligand-independent dimerization and ligand-induced conformational changes of melatonin receptors in living cells by bioluminescence resonance energy transfer". The Journal of Biological Chemistry. 277 (24): 21522–8. doi:10.1074/jbc.M200729200. PMID 11940583.
Yuan L, Collins AR, Dai J, Dubocovich ML, Hill SM (Jun 2002). "MT(1) melatonin receptor overexpression enhances the growth suppressive effect of melatonin in human breast cancer cells". Molecular and Cellular Endocrinology. 192 (1–2): 147–56. doi:10.1016/S0303-7207(02)00029-1. PMID 12088876. S2CID 54393974.
Slominski A, Pisarchik A, Zbytek B, Tobin DJ, Kauser S, Wortsman J (Jul 2003). "Functional activity of serotoninergic and melatoninergic systems expressed in the skin". Journal of Cellular Physiology. 196 (1): 144–53. doi:10.1002/jcp.10287. PMID 12767050. S2CID 24534729.
Morcuende JA, Minhas R, Dolan L, Stevens J, Beck J, Wang K, Weinstein SL, Sheffield V (Sep 2003). "Allelic variants of human melatonin 1A receptor in patients with familial adolescent idiopathic scoliosis". Spine. 28 (17): 2025–8, discussion 2029. doi:10.1097/01.BRS.0000083235.74593.49. PMID 12973153. S2CID 22201689.
Aust S, Thalhammer T, Humpeler S, Jäger W, Klimpfinger M, Tucek G, Obrist P, Marktl W, Penner E, Ekmekcioglu C (Jan 2004). "The melatonin receptor subtype MT1 is expressed in human gallbladder epithelia". Journal of Pineal Research. 36 (1): 43–8. doi:10.1046/j.1600-079X.2003.00095.x. PMID 14675129. S2CID 25934742.

v t e Melatonin receptor modulators
MT₁Tooltip Melatonin receptor 1	Agonists: 2-Iodomelatonin 6-Hydroxymelatonin Agomelatine Fabomotizole (afobazole) GR-196,429 Melatonin N-Acetylserotonin (normelatonin) Piromelatine Ramelteon Tasimelteon TIK-301 (LY-156,735) Antagonists: Luzindole
MT₂Tooltip Melatonin receptor 2	Agonists: 2-Iodomelatonin 6-Hydroxymelatonin Agomelatine GR-196,429 Melatonin N-Acetylserotonin (normelatonin) Piromelatine Ramelteon Tasimelteon TIK-301 (LY-156,735) Antagonists: Luzindole
Unsorted	Agonists: 2-Phenylmelatonin 5-Methoxyluzindole 6-Chloromelatonin 6-Fluoromelatonin 6-Methoxymelatonin 6,7-Dichloro-2-methylmelatonin 8-M-PDOT AMMTC GR-135,531 (of MT₃Tooltip melatonin receptor 1C) N-Acetyltryptamine N-Butanoylmelatonin N-Propionylmelatonin S-24268 S-25150 Antagonists: 4-P-ADOT 4-P-PDOT DH-97 N-Acetyltryptamine (of MT₃) Prazosin (of MT₃) S-20928 S-22153 S-24601 S-25567 S-26131
See also: Receptor/signaling modulators Adrenergics Dopaminergics Serotonergics Monoamine metabolism modulators

Melatonin receptor 1A

Function

Ligands

See also

References

Further reading

Suggest as cover photo

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