Seroatlas · Human Serome Atlas

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 GGFQPDEK

LocalizationUniProt · 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.

Disease | GeneticClinVar

2 pathogenic / likely-pathogenic of 418 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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.

Canonical record: https://seroatlas.com/gene/SLC10A2. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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