GPR183

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G-protein coupled receptor 183 also known as Epstein-Barr virus-induced G-protein coupled receptor 2 (EBI2) is a protein that in humans is encoded by the GPR183 gene.[1]

This gene was identified by the up-regulation of its expression upon Epstein-Barr virus infection of the Burkitt's lymphoma cell line BL41.[2] This gene is predicted to encode a G protein-coupled receptor that is most closely related to the thrombin receptor. Expression of this gene was detected in B-lymphocyte cell lines and lymphoid tissues but not in T-lymphocyte cell lines or peripheral blood T lymphocytes.[1]

EBI2 helps B cell homing within a lymph node. EBI2 expression increases during B cell activation, after B cell receptor and CD40 stimulation; its expression decreases during germinal cell development due to BCL6--a transcription factor required in germinal center development. EBI2 must turn off to move B cells to the germinal center from the periphery, and must turn on for B cells to exit the germinal center and re-enter the periphery.[3] EBI2 is a receptor for oxysterols, the most potent activator being 7α,25-dihydroxycholesterol.[4]

References

  1. 1.0 1.1 "Entrez Gene: EBI2 Epstein-Barr virus induced gene 2 (lymphocyte-specific G protein-coupled receptor)".
  2. Birkenbach M, Josefsen K, Yalamanchili R, Lenoir G, Kieff E (Apr 1993). "Epstein-Barr virus-induced genes: first lymphocyte-specific G protein-coupled peptide receptors". J Virol. 67 (4): 2209–20. PMC 240341. PMID 8383238.
  3. Pereira JP, Kelly LM, Xu Y, Cyster JG (Aug 2009). "EBI2 mediates B cell segregation between the outer and centre follicle". Nature. 460 (7259): 1122–6. doi:10.1038/nature08226. PMC 2809436. PMID 19597478.
  4. Liu C, Yang X, Wu J, Kuei C, Mani N, Zhang L, Yu J, Sutton S, Qin N, Banie H, Karlsson L, Sun S, Lovenberg T (Jul 2011). "Oxysterols direct immune cell migration via EBI2". Nature. 475 (7357): 524–7. doi:10.1038/nature10280. PMC 4297623. PMID 21796212.

Further reading

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


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