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SLC51A
Identifiers
Aliases	SLC51A, OSTA, OSTalpha, solute carrier family 51 alpha subunit, solute carrier family 51 subunit alpha, PFIC6
External IDs	OMIM: 612084; MGI: 2146634; HomoloGene: 44941; GeneCards: SLC51A; OMA:SLC51A - orthologs
Gene location (Human) Chr. Chromosome 3 (human) Band 3q29 Start 196,211,487 bp End 196,243,178 bp
Gene location (Mouse) Chr. Chromosome 16 (mouse) Band 16|16 B3 Start 32,293,322 bp End 32,306,697 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in mucosa of ileum mucosa of transverse colon right lobe of liver nasal epithelium jejunal mucosa duodenum olfactory zone of nasal mucosa right testis sperm left testis Top expressed in ileum intestinal villus jejunum right kidney duodenum Ileal epithelium human kidney migratory enteric neural crest cell proximal tubule crypt of lieberkuhn of small intestine More reference expression data BioGPS n/a
Gene ontology Molecular function protein homodimerization activity protein heterodimerization activity bile acid transmembrane transporter activity transmembrane transporter activity Cellular component integral component of membrane plasma membrane endoplasmic reticulum membrane endoplasmic reticulum membrane basolateral plasma membrane protein-containing complex Biological process bile acid and bile salt transport bile acid secretion transmembrane transport organic substance transport Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 200931 106407 Ensembl ENSG00000163959 ENSMUSG00000035699 UniProt Q86UW1 Q8R000 RefSeq (mRNA) NM_152672 NM_145932 RefSeq (protein) NP_689885 NP_666044 Location (UCSC) Chr 3: 196.21 – 196.24 Mb Chr 16: 32.29 – 32.31 Mb PubMed search
Wikidata
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Organic solute transporter alpha, also known as OST-alpha, is a protein which in humans is encoded by the SLC51A gene.

Function

OST-alpha together with OST-beta is able to transport estrone sulfate, taurocholate, digoxin, and prostaglandin E2 across cell membranes. The Ost-alpha / Ost-beta heterodimer, but not the individual subunits, stimulates sodium-independent bile acid uptake. The heterodimer furthermore is essential for intestinal bile acid transport.

OST-alpha and OST-alpha have high expression in the testis, colon, liver, small intestine, kidney, ovary, and adrenal gland.

See also

• OSTbeta
• OST Family
• Transporter Classification Database

References

1. ^ GRCh38: Ensembl release 89: ENSG00000163959 – Ensembl, May 2017
2. ^ GRCm38: Ensembl release 89: ENSMUSG00000035699 – Ensembl, 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. "Entrez Gene: OSTalpha organic solute transporter alpha".
6. ^ Seward DJ, Koh AS, Boyer JL, Ballatori N (July 2003). "Functional complementation between a novel mammalian polygenic transport complex and an evolutionarily ancient organic solute transporter, OSTalpha-OSTbeta". J. Biol. Chem. 278 (30): 27473–82. doi:10.1074/jbc.M301106200. PMID 12719432.
7. ^ Dawson PA, Hubbert M, Haywood J, Craddock AL, Zerangue N, Christian WV, Ballatori N (February 2005). "The Heteromeric Organic Solute Transporter α-β, Ostα-Ostβ, Is an Ileal Basolateral Bile Acid Transporter". J. Biol. Chem. 280 (8): 6960–8. doi:10.1074/jbc.M412752200. PMC 1224727. PMID 15563450.
8. Rao A, Haywood J, Craddock AL, Belinsky MG, Kruh GD, Dawson PA (March 2008). "The organic solute transporter α-β, Ostα-Ostβ, is essential for intestinal bile acid transport and homeostasis". Proc. Natl. Acad. Sci. U.S.A. 105 (10): 3891–6. Bibcode:2008PNAS..105.3891R. doi:10.1073/pnas.0712328105. PMC 2268840. PMID 18292224.

Further reading

• 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. Bibcode:2002PNAS...9916899M. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Seward DJ, Koh AS, Boyer JL, Ballatori N (2003). "Functional complementation between a novel mammalian polygenic transport complex and an evolutionarily ancient organic solute transporter, OSTalpha-OSTbeta". J. Biol. Chem. 278 (30): 27473–82. doi:10.1074/jbc.M301106200. PMID 12719432.
• Dawson PA, Hubbert M, Haywood J, et al. (2005). "The Heteromeric Organic Solute Transporter α-β, Ostα-Ostβ, Is an Ileal Basolateral Bile Acid Transporter". J. Biol. Chem. 280 (8): 6960–8. doi:10.1074/jbc.M412752200. PMC 1224727. PMID 15563450.
• Lee H, Zhang Y, Lee FY, et al. (2006). "FXR regulates organic solute transporters alpha and beta in the adrenal gland, kidney, and intestine". J. Lipid Res. 47 (1): 201–14. doi:10.1194/jlr.M500417-JLR200. PMID 16251721.
• Landrier JF, Eloranta JJ, Vavricka SR, Kullak-Ublick GA (2006). "The nuclear receptor for bile acids, FXR, transactivates human organic solute transporter-alpha and -beta genes". Am. J. Physiol. Gastrointest. Liver Physiol. 290 (3): G476–85. doi:10.1152/ajpgi.00430.2005. PMID 16269519. S2CID 8687386.
• Ballatori N, Christian WV, Lee JY, et al. (2005). "OSTalpha-OSTbeta: a major basolateral bile acid and steroid transporter in human intestinal, renal, and biliary epithelia". Hepatology. 42 (6): 1270–9. doi:10.1002/hep.20961. PMID 16317684. S2CID 55829915.
• Boyer JL, Trauner M, Mennone A, et al. (2006). "Upregulation of a basolateral FXR-dependent bile acid efflux transporter OSTalpha-OSTbeta in cholestasis in humans and rodents". Am. J. Physiol. Gastrointest. Liver Physiol. 290 (6): G1124–30. doi:10.1152/ajpgi.00539.2005. PMID 16423920. S2CID 86156271.
• Lim J, Hao T, Shaw C, et al. (2006). "A protein-protein interaction network for human inherited ataxias and disorders of Purkinje cell degeneration". Cell. 125 (4): 801–14. doi:10.1016/j.cell.2006.03.032. PMID 16713569. S2CID 13709685.
• Sun AQ, Balasubramaniyan N, Xu K, et al. (2007). "Protein-protein interactions and membrane localization of the human organic solute transporter". Am. J. Physiol. Gastrointest. Liver Physiol. 292 (6): G1586–93. doi:10.1152/ajpgi.00457.2006. PMID 17332473.

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