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G protein-coupled receptor 143
Symbols GPR143; OA1
External IDs OMIM300500 MGI107193 HomoloGene230 IUPHAR: GPR143 GeneCards: GPR143 Gene
RNA expression pattern
PBB GE GPR143 206696 at tn.png
More reference expression data
Species Human Mouse
Entrez 4935 18241
Ensembl ENSG00000101850 ENSMUSG00000025333
UniProt P51810 Q549B6
RefSeq (mRNA) NM_000273 NM_010951
RefSeq (protein) NP_000264 NP_035081
Location (UCSC) Chr X:
9.65 - 9.69 Mb
Chr X:
148.12 - 148.15 Mb
PubMed search [1] [2]

G-protein coupled receptor 143 is a protein that in humans is encoded by the GPR143 gene.[1][2][3]

Ocular albinism type 1 protein is a conserved integral membrane protein with seven transmembrane domains. It is expressed in the eye and epidermal melanocytes.[3]

The GPR143 gene is regulated by the Microphthalmia-associated transcription factor[4][5].


GPR143 has been shown to interact with GNAI1.[2]


  1. ^ Bassi MT, Schiaffino MV, Renieri A, De Nigris F, Galli L, Bruttini M, Gebbia M, Bergen AA, Lewis RA, Ballabio A (Sep 1995). "Cloning of the gene for ocular albinism type 1 from the distal short arm of the X chromosome". Nat Genet 10 (1): 13–9. doi:10.1038/ng0595-13. PMID 7647783.  
  2. ^ a b Schiaffino MV, d'Addio M, Alloni A, Baschirotto C, Valetti C, Cortese K, Puri C, Bassi MT, Colla C, De Luca M, Tacchetti C, Ballabio A (Sep 1999). "Ocular albinism: evidence for a defect in an intracellular signal transduction system". Nat Genet 23 (1): 108–12. doi:10.1038/12715. PMID 10471510.  
  3. ^ a b "Entrez Gene: GPR143 G protein-coupled receptor 143".  
  4. ^ Vetrini F, Auricchio A, Du J, et al. (2004). "The microphthalmia transcription factor (Mitf) controls expression of the ocular albinism type 1 gene: link between melanin synthesis and melanosome biogenesis". Mol. Cell Biol. 24 (15): 6550–9. doi:10.1128/MCB.24.15.6550-6559.2004. PMID 15254223.  
  5. ^ Hoek KS, Schlegel NC, Eichhoff OM, et al. (2008). "Novel MITF targets identified using a two-step DNA microarray strategy". Pigment Cell Melanoma Res. 21 (6): 665–76. doi:10.1111/j.1755-148X.2008.00505.x.  

Further reading

  • Oetting WS, King RA (1999). "Molecular basis of albinism: mutations and polymorphisms of pigmentation genes associated with albinism.". Hum. Mutat. 13 (2): 99–115. doi:10.1002/(SICI)1098-1004(1999)13:2<99::AID-HUMU2>3.0.CO;2-C. PMID 10094567.  
  • Oetting WS (2002). "New insights into ocular albinism type 1 (OA1): Mutations and polymorphisms of the OA1 gene.". Hum. Mutat. 19 (2): 85–92. doi:10.1002/humu.10034. PMID 11793467.  
  • Schnur RE, Trask BJ, van den Engh G, et al. (1989). "An Xp22 microdeletion associated with ocular albinism and ichthyosis: approximation of breakpoints and estimation of deletion size by using cloned DNA probes and flow cytometry.". Am. J. Hum. Genet. 45 (5): 706–20. PMID 2573275.  
  • Meindl A, Hosenfeld D, Brückl W, et al. (1993). "Analysis of a terminal Xp22.3 deletion in a patient with six monogenic disorders: implications for the mapping of X linked ocular albinism.". J. Med. Genet. 30 (10): 838–42. doi:10.1136/jmg.30.10.838. PMID 8230160.  
  • Schiaffino MV, Bassi MT, Galli L, et al. (1996). "Analysis of the OA1 gene reveals mutations in only one-third of patients with X-linked ocular albinism.". Hum. Mol. Genet. 4 (12): 2319–25. doi:10.1093/hmg/4.12.2319. PMID 8634705.  
  • Schnur RE, Gao M, Wick PA, et al. (1998). "OA1 mutations and deletions in X-linked ocular albinism.". Am. J. Hum. Genet. 62 (4): 800–9. doi:10.1086/301776. PMID 9529334.  
  • Rosenberg T, Schwartz M (1999). "X-linked ocular albinism: prevalence and mutations--a national study.". Eur. J. Hum. Genet. 6 (6): 570–7. doi:10.1038/sj.ejhg.5200226. PMID 9887374.  
  • d'Addio M, Pizzigoni A, Bassi MT, et al. (2001). "Defective intracellular transport and processing of OA1 is a major cause of ocular albinism type 1.". Hum. Mol. Genet. 9 (20): 3011–8. doi:10.1093/hmg/9.20.3011. PMID 11115845.  
  • Bassi MT, Bergen AA, Bitoun P, et al. (2001). "Diverse prevalence of large deletions within the OA1 gene in ocular albinism type 1 patients from Europe and North America.". Hum. Genet. 108 (1): 51–4. doi:10.1007/s004390000440. PMID 11214907.  
  • Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMID 12477932.  
  • Touloukian CE, Leitner WW, Schnur RE, et al. (2003). "Normal tissue depresses while tumor tissue enhances human T cell responses in vivo to a novel self/tumor melanoma antigen, OA1.". J. Immunol. 170 (3): 1579–85. PMID 12538723.  
  • Basrur V, Yang F, Kushimoto T, et al. (2003). "Proteomic analysis of early melanosomes: identification of novel melanosomal proteins.". J. Proteome Res. 2 (1): 69–79. doi:10.1021/pr025562r. PMID 12643545.  
  • Camand O, Boutboul S, Arbogast L, et al. (2003). "Mutational analysis of the OA1 gene in ocular albinism.". Ophthalmic Genet. 24 (3): 167–73. doi:10.1076/opge. PMID 12868035.  
  • Mayeur H, Roche O, Vêtu C, et al. (2006). "Eight previously unidentified mutations found in the OA1 ocular albinism gene.". BMC Med. Genet. 7: 41. doi:10.1186/1471-2350-7-41. PMID 16646960.  
  • Sallmann GB, Bray PJ, Rogers S, et al. (2006). "Scanning the ocular albinism 1 (OA1) gene for polymorphisms in congenital nystagmus by DHPLC.". Ophthalmic Genet. 27 (2): 43–9. doi:10.1080/13816810600677834. PMID 16754205.  
  • Chi A, Valencia JC, Hu ZZ, et al. (2007). "Proteomic and bioinformatic characterization of the biogenesis and function of melanosomes.". J. Proteome Res. 5 (11): 3135–44. doi:10.1021/pr060363j. PMID 17081065.  


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