UniProt functional annotation for Q86UW2



	UniProt functional annotation for Q86UW2

UniProt code: Q86UW2.

Organism: Homo sapiens (Human).

Taxonomy: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.

Function: 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. {ECO:0000269|PubMed:16317684}.

Subunit: Interacts with SLC51A. The Ost-alpha/Ost-beta complex is a heterodimer composed of alpha (SLC51A) and beta (SLC51B) subunit; induces the transport of SLC51A from the reticulum endoplasmic to the plasma membrane (By similarity). {ECO:0000250}.

Subcellular location: Cell membrane {ECO:0000269|PubMed:12719432, ECO:0000269|PubMed:16317684}; Single-pass membrane protein {ECO:0000269|PubMed:12719432, ECO:0000269|PubMed:16317684}. Note=Mainly restricted to the lateral and basal membranes of ileal enterocytes.

Tissue specificity: Widely expressed with a high expression in ileum. 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. {ECO:0000269|PubMed:12719432, ECO:0000269|PubMed:16317684}.

Induction: Positively regulated via NR1H4/FXR. {ECO:0000269|PubMed:16251721, ECO:0000269|PubMed:16269519}.

Domain: The transmembrane domain (TM) is the major site of interaction with SLC51A. The extracellular-membrane interface is absolutely required for transport activity. The intracellular-membrane interface is necessary for establishing the correct membrane orientation that is essential for the heterodimer Ost-alpha/Ost-beta complex formation and transport activity at the cell membrane surface (By similarity). {ECO:0000250}.

Similarity: Belongs to the OST-beta family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.


Organism:		Homo sapiens (Human).
Taxonomy:		Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.



Function:		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. {ECO:0000269\|PubMed:16317684}.


Subunit:		Interacts with SLC51A. The Ost-alpha/Ost-beta complex is a heterodimer composed of alpha (SLC51A) and beta (SLC51B) subunit; induces the transport of SLC51A from the reticulum endoplasmic to the plasma membrane (By similarity). {ECO:0000250}.
Subcellular location:		Cell membrane {ECO:0000269\|PubMed:12719432, ECO:0000269\|PubMed:16317684}; Single-pass membrane protein {ECO:0000269\|PubMed:12719432, ECO:0000269\|PubMed:16317684}. Note=Mainly restricted to the lateral and basal membranes of ileal enterocytes.
Tissue specificity:		Widely expressed with a high expression in ileum. 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. {ECO:0000269\|PubMed:12719432, ECO:0000269\|PubMed:16317684}.
Induction:		Positively regulated via NR1H4/FXR. {ECO:0000269\|PubMed:16251721, ECO:0000269\|PubMed:16269519}.
Domain:		The transmembrane domain (TM) is the major site of interaction with SLC51A. The extracellular-membrane interface is absolutely required for transport activity. The intracellular-membrane interface is necessary for establishing the correct membrane orientation that is essential for the heterodimer Ost-alpha/Ost-beta complex formation and transport activity at the cell membrane surface (By similarity). {ECO:0000250}.
Similarity:		Belongs to the OST-beta family. {ECO:0000305}.