OSTbeta

SLC51B
Identifiers
Aliases	SLC51B, OSTB, OSTBETA, OSTbeta, solute carrier family 51 beta subunit, solute carrier family 51 subunit beta, PBAM2
External IDs	OMIM: 612085; MGI: 3582052; HomoloGene: 18721; GeneCards: SLC51B; OMA:SLC51B - orthologs
Gene location (Human)
Chr.	Chromosome 15 (human)
End	65,053,397 bp
Gene location (Mouse)
Chr.	Chromosome 9 (mouse)
End	65,330,237 bp
RNA expression pattern
	Top expressed in
	mucosa of ileum; ; mucosa of transverse colon; ; duodenum; ; rectum; ; jejunal mucosa; ; testicle; ; mucosa of sigmoid colon; ; popliteal artery; ; tibial arteries; ; right coronary artery;
	Top expressed in
	jejunum; ; ileum; ; epithelium of small intestine; ; right kidney; ; proximal tubule; ; duodenum; ; human kidney; ; Paneth cell; ; large intestine; ; colon;
	More reference expression data
	More reference expression data
Gene ontology
Molecular function	transporter activity; protein heterodimerization activity; bile acid transmembrane transporter activity; transmembrane transporter activity;
Cellular component	integral component of membrane; plasma membrane; membrane; basolateral plasma membrane; protein-containing complex;
Biological process	positive regulation of protein glycosylation; regulation of protein stability; positive regulation of protein exit from endoplasmic reticulum; bile acid and bile salt transport; positive regulation of protein targeting to membrane; bile acid secretion; transmembrane transport; organic substance transport;
	Sources:Amigo / QuickGO
Orthologs
	123264
	330962
	ENSG00000186198
	ENSMUSG00000053862
	Q86UW2
	Q80WK2
	NM_178859
	NM_178933
	NP_849190
	NP_849264
	Wikidata
View/Edit Human	View/Edit Mouse

Organic solute transporter beta, also known as OST-beta, is a protein which in humans is encoded by the OSTB gene.^[5]^[6]

Function

OST-beta together with OST-alpha is able to transport estrone sulfate, taurocholate, digoxin, and prostaglandin E2 across cell membranes.^[6]^[7] The Ost-alpha / Ost-beta heterodimer, but not the individual subunits, stimulates sodium-independent bile acid uptake.^[7] The heterodimer furthermore is essential for intestinal bile acid transport.^[8]

OST-alpha and OST-beta have high expression in the testis, colon, liver, small intestine, kidney, ovary, and adrenal gland.^[6]

References

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000186198 – Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000053862 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Entrez Gene: OSTbeta organic solute transporter beta".
^ ^a ^b ^c 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.
^ ^a ^b 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.
^ 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.

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.
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.
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.
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.
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.
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.
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.
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.

This article on a gene on human chromosome 15 is a stub. You can help Wikipedia by expanding it.

[refGRCh38Ensembl-1] GRCh38: Ensembl release 89: ENSG00000186198 – Ensembl, May 2017

[refGRCm38Ensembl-2] GRCm38: Ensembl release 89: ENSMUSG00000053862 – 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.

[entrez-5] "Entrez Gene: OSTbeta organic solute transporter beta".

[pmid12719432-6] 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.

[pmid15563450-7] 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.

[pmid18292224-8] 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.

[5]

[6]

[1]

[2]

[3]

[4]

[7]

[8]

OSTbeta

Contents

Function

See also

References

Further reading