General Information and Variability Data of DT
DT ID DTD0392
Gene Name SLC51B
Protein Name Organic solute transporter subunit beta
Synonyms OST-beta; OSTB; OSTBETA; SLC51B; Solute carrier family 51 subunit beta
Gene ID
123264
UniProt ID
Q86UW2
TCDB ID
2.A.82.1.2
DT Family Organic Solute Transporter (OST) Family ;
Tissue Specificity Widely expressed with a high expression inileum. Expressed in testis, colon, liver, small intestine, kidney,ovary and adrenal gland; and at low levels in heart, lung, brain,pituitary, thyroid gland, uterus, prostate, mammary gland and fat.
Function This transporter is essential component of the Ost-alpha/Ost-beta complex, a heterodimer that acts as the intestinal basolateral transporter responsible for bile acid export from enterocytes into portal blood. Efficiently transports the major species of bile acids. Modulates SLC51A glycosylation, membrane trafficking and stability activities.
Species-, Tissue- and Disease-specific Protein Abundances of DT
Exogenous Factor Altering DT Activity
Approved Drug(s) Transported by This DT Digoxin Drug Info Arrhythmias [ICD-11: BC60-BC9Z] Approved [1]
Dinoprostone Drug Info Medical abortion [ICD-11: JA00.1] Approved [1]
Estrone sulfate Drug Info Menopausal symptoms [ICD-11: MF32] Approved [1]
Withdrawn, Discontinued or Preclinical Drug(s) Transported by This DT Sodium taurocholate Drug Info Type 2 diabetes [ICD-11: 5A11] Preclinical [2]
Taurocholic acid Drug Info Type 2 diabetes [ICD-11: 5A11] Terminated [1]
Endogenous Substrate(s) Dehydroepiandrosterone sulfate
Drug-DT Affinity Assessed by Cell Line
Drug(s) with Drug-DT Affinity Data Estrone sulfate Drug Info Oocytes-OSTalpha-OSTbeta Km = 320 microM []
References
1 Functional complementation between a novel mammalian polygenic transport complex and an evolutionarily ancient organic solute transporter, OSTalpha-OSTbeta. J Biol Chem. 2003 Jul 25;278(30):27473-82.
2 OSTalpha-OSTbeta: a major basolateral bile acid and steroid transporter in human intestinal, renal, and biliary epithelia. Hepatology. 2005 Dec;42(6):1270-9.

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