Protein Domain : IPR000025

Type:  Family Name:  Melatonin receptor family
Description:  Melatonin is a naturally occurring compound found in animals, plants, and microbes [, ]. In animals melatonin is secreted by the pineal gland during darkness [, ]. It regulates a variety of neuroendocrine functions and is thought to play an essential role in circadian rhythms []. Drugs that modify the action of melatonin, and hence influence circadian cycles, are of clinical interest for example, in the treatment of jet-lag []. Many of the biological effects of melatonin are produced through the activation of melatonin receptors [], which are members of rhodopsin-like G protein-coupled receptor family. There are three melatonin receptor subtypes. Melatonin receptor type 1A and melatonin receptor type 1B are present in humans and other mammals [] while melatonin receptor type 1C has been identified in amphibia and birds []. There is also a closely-related orphan receptor, termed melatonin-related receptor type 1X (also known as GPR50) [], is yet to achieve receptor status from the International Union of Basic and Clinical Pharmacology (IUPHAR), since a robust response mediated via the protein has not been reported in the literature. Melatonin receptor type 1C receptors are 80% identical and are distinct from 1A and 1B subtypes. Similar ligand binding and functional characteristics are observed in expressed 1A and 1C receptors. The melatonin receptors inhibit adenylyl cyclase via a pertussis-toxin-sensitive G-protein, probably of the Gi/Go class. This entry represents the melatonin receptor family. Short Name:  Melatonin_rcpt

4 Child Features

DB identifier Type Name
IPR002279 Family Melatonin receptor type 1C
IPR002278 Family Melatonin receptor 1A
IPR002280 Family Melatonin-related receptor 1X
IPR027459 Family Melatonin receptor 1B

0 Contains

1 Cross References

Identifier
PR00857

0 Found In

3 GO Annotations

GO Term Gene Name
GO:0008502 IPR000025
GO:0007186 IPR000025
GO:0016021 IPR000025

3 Ontology Annotations

GO Term Gene Name
GO:0008502 IPR000025
GO:0007186 IPR000025
GO:0016021 IPR000025

1 Parent Features

DB identifier Type Name
IPR000276 Family G protein-coupled receptor, rhodopsin-like

0 Proteins

10 Publications

First Author Title Year Journal Volume Pages PubMed ID
            15206778
            19033551
            1649044
            17901231
            17298593
            16473858
            15992934
            8936344
            15357831
            9933574