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G protein-coupled bile acid receptor

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(Redirected from TGR5)

GPBAR1
Identifiers
AliasesGPBAR1, BG37, GPCR19, GPR131, M-BAR, TGR5, G protein-coupled bile acid receptor, G protein-coupled bile acid receptor 1
External IDsOMIM: 610147; MGI: 2653863; HomoloGene: 18125; GeneCards: GPBAR1; OMA:GPBAR1 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001077191
NM_001077194
NM_170699
NM_001321950

NM_174985

RefSeq (protein)

NP_001070659
NP_001070662
NP_001308879
NP_733800

NP_778150

Location (UCSC)Chr 2: 218.26 – 218.26 MbChr 1: 74.32 – 74.32 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

The G protein-coupled bile acid receptor 1 (GPBAR1) also known as G-protein coupled receptor 19 (GPCR19), membrane-type receptor for bile acids (M-BAR) or Takeda G protein-coupled receptor 5 (TGR5) is a protein that in humans is encoded by the GPBAR1 gene.[5][6]

Function

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This gene encodes a member of the G protein-coupled receptor (GPCR) superfamily. This protein functions as a cell surface receptor for bile acids. Treatment of cells expressing this GPCR with bile acids induces the production of intracellular cAMP, activation of a MAP kinase signaling pathway, and internalization of the receptor. The receptor is implicated in the suppression of macrophage functions and regulation of energy homeostasis by bile acids.[7]

One effect of this receptor is to activate deiodinases which convert the prohormone thyroxine (T4) to the active hormone triiodothyronine (T3). T3 in turn activates the thyroid hormone receptor which increases metabolic rate.[8][9]

References

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  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000179921Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000064272Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Kawamata Y, Fujii R, Hosoya M, Harada M, Yoshida H, Miwa M, Fukusumi S, Habata Y, Itoh T, Shintani Y, Hinuma S, Fujisawa Y, Fujino M (2003). "A G protein-coupled receptor responsive to bile acids". J. Biol. Chem. 278 (11): 9435–40. doi:10.1074/jbc.M209706200. PMID 12524422.
  6. ^ Wang H, Tan YZ, Mu RH, Tang SS, Liu X, Xing SY, Long Y, Yuan DH, Hong H (June 2021). "Takeda G Protein-Coupled Receptor 5 Modulates Depression-like Behaviors via Hippocampal CA3 Pyramidal Neurons Afferent to Dorsolateral Septum". Biological Psychiatry. 89 (11): 1084–1095. doi:10.1016/j.biopsych.2020.11.018. PMID 33536132. S2CID 227165118.
  7. ^ "Entrez Gene: GPBAR1 G protein-coupled bile acid receptor 1".
  8. ^ Watanabe M, Houten SM, Mataki C, Christoffolete MA, Kim BW, Sato H, Messaddeq N, Harney JW, Ezaki O, Kodama T, Schoonjans K, Bianco AC, Auwerx J (2006). "Bile acids induce energy expenditure by promoting intracellular thyroid hormone activation". Nature. 439 (7075): 484–9. Bibcode:2006Natur.439..484W. doi:10.1038/nature04330. PMID 16400329. S2CID 4429032.
  9. ^ Baxter JD, Webb P (2006). "Metabolism: bile acids heat things up". Nature. 439 (7075): 402–3. Bibcode:2006Natur.439..402B. doi:10.1038/439402a. PMID 16437098. S2CID 45562883.

Further reading

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