TCDB is operated by the Saier Lab Bioinformatics Group
Transporter Information:
Name: solute carrier family 10 (sodium/bile acid cotransporter family), member 1
Symbol: SLC10A1
TC: 2.A.28.1.1
Locations: 14
Aliases: NTCP
GenBank: L21893
Swiss-Prot: Q14973
Accession Number: NM_003049
PubMed (8132774): Hagenbuch B, Meier PJ. Molecular cloning, chromosomal localization, and functional characterization ofa human liver Na+/bile acid cotransporter.J Clin Invest. 1994 Mar;93(3):1326-31. PMID: 8132774 [PubMed - indexed for MEDLINE]

We have used a cDNA probe from a cloned rat liver Na+/taurocholate cotransporting polypeptide (Ntcp) to screen a human liver cDNA library. A 1,599-bp cDNA clone that encodes a human Na+/taurocholate cotransporting polypeptide (NTCP) was isolated. The human NTCP consists of 349 amino acids (calculated molecular mass of 38 kD) and exhibits 77% amino acid homology with the rat Ntcp. In vitro translation experiments indicate that the protein is glycosylated and has a molecular weight similar to the rat Ntcp. Injection of in vitro transcribed cRNA into Xenopus laevis oocytes resulted in the expression of Na(+)-dependent taurocholate uptake. Saturation kinetics indicated that the human NTCP has a higher affinity for taurocholate (apparent Km = 6 microM) than the previously cloned rat protein (apparent Km = 25 microM). NTCP-mediated taurocholate uptake into oocytes was inhibited by all major bile acid derivatives (100 microM), bumetanide (500 microM), and bromosulphophthalein (100 microM). Southern blot analysis of genomic DNA from a panel of human/hamster somatic cell hybrids mapped the human NTCP gene to chromosome 14.

>sp|Q14973|NTCP_HUMAN Sodium/bile acid cotransporter OS=Homo sapiens GN=SLC10A1 PE=2 SV=1