General Information and Variability Data of DT
DT ID DTD0014
Gene Name ABCB11
Protein Name Bile salt export pump
Synonyms ABC16; ABCB11; ATP-binding cassette sub-family B member 11; BRIC2; BSEP; PFIC-2; PFIC2; PGY4; SPGP
Gene ID
8647
UniProt ID
O95342
TCDB ID
3.A.1.201.2
DT Family ATP-Binding Cassette (ABC) Superfamily
Multidrug Resistance Exporter (MDR) Family (ABCB)
Tissue Specificity Expressed predominantly, if not exclusively inthe liver, where it was further localized to the canalicularmicrovilli and to subcanalicular vesicles of the hepatocytes by insitu.
Function This transporter involved in the ATP-dependent secretion of bile salts into the canaliculus of hepatocytes.
Disease(s) Hypercholesterolemia [ICD-11: 5C80.0]
Genetic Polymorphisms & Epigenetic Regulations of DT
Species-, Tissue- and Disease-specific Protein Abundances of DT
Exogenous Factor Altering DT Activity
Approved Drug(s) Transported by This DT Ezetimibe Drug Info Hypercholesterolemia [ICD-11: 5C80.0] Approved [1]
Glimepiride Drug Info Diabetes [ICD-11: 5A10-5A14] Approved [1]
Glipizide Drug Info Diabetes [ICD-11: 5A10-5A14] Approved [1]
Pravastatin Drug Info Hypercholesterolemia [ICD-11: 5C80.0] Approved [2]
Withdrawn, Discontinued or Preclinical Drug(s) Transported by This DT Sodium taurocholate Drug Info Type 2 diabetes [ICD-11: 5A11] Preclinical [2]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 [3]
Endogenous Substrate(s) Congugated bile salts; Glycine conjugates; Taurine conjugates; Unconjugated bile salts; Glycochenodeoxycholate; Glycocholate; Taurochenodeoxycholate
Endogenous Metabolites (EMs) Handled by This DT Estradiol-17beta-glucuronide EM Info Unclear experiment used for identifying this EM [4]
Drug-DT Affinity Assessed by Cell Line
Drug(s) with Drug-DT Affinity Data Pravastatin Drug Info Human embryonic kidney cells (HEK293)-BSEP Km = 124 microM [2]
Sodium taurocholate Drug Info Human embryonic kidney cells (HEK293)-BSEP Km = 4.64 microM [2]
Sodium taurocholate Drug Info Spodoptera frugiperda (Sf9) cells-BSEP Km = 15 microM [5]
Taurocholic acid Drug Info High five cells-BSEP Km = 4.25 microM [6]
References
1 Early identification of clinically relevant drug interactions with the human bile salt export pump (BSEP/ABCB11). Toxicol Sci. 2013 Dec;136(2):328-43.
2 Bile salt export pump (BSEP/ABCB11) can transport a nonbile acid substrate, pravastatin. J Pharmacol Exp Ther. 2005 Aug;314(2):876-82.
3 Inhibition of transport across the hepatocyte canalicular membrane by the antibiotic fusidate. Biochem Pharmacol. 2002 Jul 1;64(1):151-8.
4 Beyond Competitive Inhibition: Regulation of ABC Transporters by Kinases and Protein-Protein Interactions as Potential Mechanisms of Drug-Drug Interactions. Drug Metab Dispos. 2018 May;46(5):567-580.
5 Effect of membrane cholesterol on BSEP/Bsep activity: species specificity studies for substrates and inhibitors. Drug Metab Dispos. 2009 Sep;37(9):1878-86.
6 The human bile salt export pump: characterization of substrate specificity and identification of inhibitors. Gastroenterology. 2002 Nov;123(5):1649-58.

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