SLC10A2
Ileal sodium/bile acid cotransporter
Also known as: ASBT, IBAT, ISBT, NTCP2, NTCP2_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q12908
- Gene
- SLC10A2
- Ensembl
- ENSG00000125255
- Chromosome
- 13
- Canonical length
- 348 aa
- Protein class
- Disease related genes, FDA approved drug targets, Human disease related genes, Metabolic proteins, Predicted membrane proteins, Transporters
- Quaternary structure
- Homodimer
OverviewNCBI Gene
This gene encodes a sodium/bile acid cotransporter. This transporter is the primary mechanism for uptake of intestinal bile acids by apical cells in the distal ileum. Bile acids are the catabolic product of cholesterol metabolism, so this protein is also critical for cholesterol homeostasis. Mutations in this gene cause primary bile acid malabsorption (PBAM); muatations in this gene may also be associated with other diseases of the liver and intestines, such as familial hypertriglyceridemia (FHTG). [provided by RefSeq, Mar 2010]
Canonical amino-acid sequenceUniProt
348 residues, UniProt reviewed canonical sequence.
>Q12908|SLC10A2
1 MNDPNSCVDN ATVCSGASCV VPESNFNNIL SVVLSTVLTI LLALVMFSMG CNVEIKKFLG
61 HIKRPWGICV GFLCQFGIMP LTGFILSVAF DILPLQAVVV LIIGCCPGGT ASNILAYWVD
121 GDMDLSVSMT TCSTLLALGM MPLCLLIYTK MWVDSGSIVI PYDNIGTSLV SLVVPVSIGM
181 FVNHKWPQKA KIILKIGSIA GAILIVLIAV VGGILYQSAW IIAPKLWIIG TIFPVAGYSL
241 GFLLARIAGL PWYRCRTVAF ETGMQNTQLC STIVQLSFTP EELNVVFTFP LIYSIFQLAF
301 AAIFLGFYVA YKKCHGKNKA EIPESKENGT EPESSFYKAN GGFQPDEKLocalizationUniProt · AlphaFold · HPA
Whether an antibody against SLC10A2 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Cell surface
- Secreted
- No
- Transmembrane segments
- 7
- Mean surface accessibility (rSASA)
- 0.31
- Highest tissue expression
- 89 nTPM
Expression across tissuesHPA
Tissue
- small intestine: 89 nTPM
- duodenum: 22 nTPM
- kidney: 16 nTPM
- gallbladder: 0.6 nTPM
- bone marrow: 0.5 nTPM
- colon: 0.3 nTPM
Single-cell type
- enterocytes: 432 nCPM
- enteric transient amplifying cells: 28 nCPM
- paneth cells: 7.7 nCPM
- proximal tubule cells: 6.6 nCPM
- goblet cells: 5.2 nCPM
- enteric stem cells: 1 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- white matter: 2.4 nTPM
- medulla oblongata: 1.5 nTPM
- pons: 1.5 nTPM
- basal ganglia: 1.3 nTPM
- thalamus: 1.2 nTPM
- cerebellum: 1 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about SLC10A2.
Disease | AllUniProt
Conditions SLC10A2 is implicated in, by any mechanism.
- Bile acid malabsorption, primary, 1 (PBAM1) MIM:613291
Disease | GeneticClinVar
2 pathogenic / likely-pathogenic of 418 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Bile acid malabsorption, primary, 1
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 1.94
- gnomAD pLI
- 0
- gnomAD missense Z
- -2.2
- DepMap mean gene effect
- 0.02
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 2% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of SLC10A2 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads SLC10A2 as an antibody target. Whether an autoantibody or antibody against SLC10A2 could matter depends on whether native SLC10A2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
SLC10A2 is annotated at the cell surface, where native SLC10A2 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label SLC10A2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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