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- Title
The ovine melatonin-related receptor: cloning and preliminary distribution and binding studies.
- Authors
Drew, J E; Barrett, P; Williams, L M; Conway, S; Morgan, P J
- Abstract
A melatonin-related receptor was cloned from an ovine genomic library. The sequenced gene has a similar structure to that of the melatonin receptor gene family and consists of two exons separated by an intron of approximately 3 kb. Exon 1 and exon 2 of the ovine melatonin-related receptor encode a protein of 575 amino acids which is 73.8% homologous to the human melatonin-related receptor and shows 40.9% homology with the ovine Mel1a melatonin receptor. COS-7 cells transiently expressing ovine melatonin-related receptors did not bind 2-[125]iodomelatonin or 3H-melatonin. Reverse transcription-polymerase chain reaction (RT-PCR) and in situ hybridization studies revealed expression of the ovine melatonin-related receptor in the hypothalamus, pituitary, retina and retinal pigment epithelium. Furthermore, expression of the ovine melatonin-related receptor is shown to be coincident with Mel1a and 2-[125I]iodomelatonin binding in the pituitary and serotonin N-acetyl transferase (arylalkylamine N-acetyl transferase, AANAT) expression in the retina. Expression patterns and similarity with the melatonin receptor gene family suggest a role for this novel G protein-coupled receptor in control and regulation of endocrine function and retinal physiology.
- Publication
Journal of neuroendocrinology, 1998, Vol 10, Issue 9, p651
- ISSN
0953-8194
- Publication type
Journal Article
- DOI
10.1046/j.1365-2826.1998.00229.x