| Pyroglutamylated RFamide peptide receptor | |||||||||||||
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| Identifiers | |||||||||||||
| Symbols | QRFPR; AQ27; GPR103; MGC149217; SP9155 | ||||||||||||
| External IDs | OMIM: 606925 MGI: 2677633 HomoloGene: 18865 IUPHAR: QRFP GeneCards: QRFPR Gene | ||||||||||||
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| Orthologs | |||||||||||||
| Species | Human | Mouse | |||||||||||
| Entrez | 84109 | 229214 | |||||||||||
| Ensembl | ENSG00000186867 | ENSMUSG00000058400 | |||||||||||
| UniProt | Q96P65 | Q3UQ27 | |||||||||||
| RefSeq (mRNA) | NM_198179 | NM_198192.2 | |||||||||||
| RefSeq (protein) | NP_937822 | NP_937835.1 | |||||||||||
| Location (UCSC) | Chr 4: 122.25 – 122.3 Mb |
Chr 3: 36.08 – 36.12 Mb |
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| PubMed search | [1] | [2] | |||||||||||
Pyroglutamylated RFamide peptide receptor also known as orexigenic neuropeptide QRFP receptor or G-protein coupled receptor 103 (GPR103) is a protein that in humans is encoded by the QRFPR gene.[1][2]
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Contents
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G protein-coupled receptors (GPCRs, or GPRs) contain 7 transmembrane domains and transduce extracellular signals through heterotrimeric G proteins.[1]
A 26-amino acid RF-amide peptide, P518 functions as a high-affinity ligand of GPR103. Both GPR103 and P518 precursor mRNA exhibited highest expression in brain.[3] The 43-amino acid QRFP peptide, a longer form of the P518 peptide is necessary to exhibit full agonistic activity with GPR103. Intravenous administration QRFP caused release of aldosterone, suggesting that QRFP and GPR103 regulate adrenal function.[4]
This article incorporates text from the United States National Library of Medicine, which is in the public domain.
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