Endothelin receptor type B

Endothelin receptor type B, (ET-B) is a protein that in humans is encoded by the EDNRB gene.[5]

EDNRB
Identifiers
AliasesEDNRB, ABCDS, ET-B, ET-BR, ETB, ETBR, ETRB, HSCR, HSCR2, WS4A, ETB1, endothelin receptor type B
External IDsOMIM: 131244; MGI: 102720; HomoloGene: 89; GeneCards: EDNRB; OMA:EDNRB - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_000115
NM_001122659
NM_001201397
NM_003991

NM_001136061
NM_001276296
NM_007904

RefSeq (protein)

NP_000106
NP_001116131
NP_001188326
NP_003982

NP_001129533
NP_001263225
NP_031930

Location (UCSC)Chr 13: 77.9 – 77.98 MbChr 14: 104.05 – 104.08 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Function

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Endothelin receptor type B is a G protein-coupled receptor which activates a phosphatidylinositol-calcium second messenger system. Its ligand, endothelin, consists of a family of three potent vasoactive peptides: ET1, ET2, and ET3. A splice variant, named SVR, has been described; the sequence of the ETB-SVR receptor is identical to ETRB except for the intracellular C-terminal ___domain. While both splice variants bind ET1, they exhibit different responses upon binding which suggests that they may be functionally distinct.[6]

Regulation

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In melanocytic cells the EDNRB gene is regulated by the microphthalmia-associated transcription factor. Mutations in either gene are links to Waardenburg syndrome.[7][8]

Clinical significance

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The multigenic disorder, Hirschsprung disease type 2, is due to mutation in endothelin receptor type B gene.[9]

Animals

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In horses, a mutation in the middle of the EDNRB gene, Ile118Lys, when homozygous, causes Lethal White Syndrome.[10] In this mutation, a mismatch in the DNA replication causes lysine to be made instead of isoleucine.[10] The resulting EDNRB protein is unable to fulfill its role in the development of the embryo, limiting the migration of the melanocyte and enteric neuron precursors. A single copy of the EDNRB mutation, the heterozygous state, produces an identifiable and completely benign spotted coat color called frame overo.[11]

Interactions

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Endothelin receptor type B has been shown to interact with Caveolin 1.[12]

Ligands

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Agonists
Antagonists
  • A-192,621
  • BQ-788
  • Bosentan (unselective ETA / ETB antagonist)

See also

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References

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  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000136160Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000022122Ensembl, 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. ^ Cyr C, Huebner K, Druck T, Kris R (Nov 1991). "Cloning and chromosomal localization of a human endothelin ETA receptor". Biochemical and Biophysical Research Communications. 181 (1): 184–90. doi:10.1016/S0006-291X(05)81399-3. PMID 1659806.
  6. ^ "Entrez Gene: EDNRB endothelin receptor type B".
  7. ^ Sato-Jin K, Nishimura EK, Akasaka E, Huber W, Nakano H, Miller A, Du J, Wu M, Hanada K, Sawamura D, Fisher DE, Imokawa G (Apr 2008). "Epistatic connections between microphthalmia-associated transcription factor and endothelin signaling in Waardenburg syndrome and other pigmentary disorders". FASEB Journal. 22 (4): 1155–68. doi:10.1096/fj.07-9080com. PMID 18039926. S2CID 14304386.
  8. ^ Hoek KS, Schlegel NC, Eichhoff OM, Widmer DS, Praetorius C, Einarsson SO, Valgeirsdottir S, Bergsteinsdottir K, Schepsky A, Dummer R, Steingrimsson E (Dec 2008). "Novel MITF targets identified using a two-step DNA microarray strategy". Pigment Cell & Melanoma Research. 21 (6): 665–76. doi:10.1111/j.1755-148X.2008.00505.x. PMID 19067971.
  9. ^ Tanaka H, Moroi K, Iwai J, Takahashi H, Ohnuma N, Hori S, Takimoto M, Nishiyama M, Masaki T, Yanagisawa M, Sekiya S, Kimura S (May 1998). "Novel mutations of the endothelin B receptor gene in patients with Hirschsprung's disease and their characterization". The Journal of Biological Chemistry. 273 (18): 11378–83. doi:10.1074/jbc.273.18.11378. PMID 9556633.
  10. ^ a b Yang GC, Croaker D, Zhang AL, Manglick P, Cartmill T, Cass D (Jun 1998). "A dinucleotide mutation in the endothelin-B receptor gene is associated with lethal white foal syndrome (LWFS); a horse variant of Hirschsprung disease". Human Molecular Genetics. 7 (6): 1047–52. doi:10.1093/hmg/7.6.1047. PMID 9580670. AG mutation, which changed isoleucine to lysine in the predicted first transmembrane ___domain of the EDNRB protein. This was associated with LWFS when homozygous and with the overo phenotype when heterozygous. -->
  11. ^ Metallinos DL, Bowling AT, Rine J (1998). "A missense mutation in the endothelin-B receptor gene is associated with Lethal White Foal Syndrome: an equine version of Hirschsprung disease". Mamm. Genome. 9 (6): 426–31. doi:10.1007/s003359900790. PMID 9585428. S2CID 19536624.
  12. ^ Yamaguchi T, Murata Y, Fujiyoshi Y, Doi T (Apr 2003). "Regulated interaction of endothelin B receptor with caveolin-1". European Journal of Biochemistry. 270 (8): 1816–27. doi:10.1046/j.1432-1033.2003.03544.x. PMID 12694195.
  13. ^ Maguire JJ, Davenport AP (Dec 2014). "Endothelin@25 - new agonists, antagonists, inhibitors and emerging research frontiers: IUPHAR Review 12". British Journal of Pharmacology. 171 (24): 5555–72. doi:10.1111/bph.12874. PMC 4290702. PMID 25131455.

Further reading

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