Enzymes
| UniProtKB help_outline | 12 proteins |
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- Name help_outline glycoursodeoxycholate Identifier CHEBI:132030 Charge -1 Formula C26H42NO5 InChIKeyhelp_outline GHCZAUBVMUEKKP-XROMFQGDSA-M SMILEShelp_outline C1[C@@]2([C@]3(CC[C@]4([C@]([C@@]3([C@H](C[C@@]2(C[C@@H](C1)O)[H])O)[H])(CC[C@]4([H])[C@@H](CCC(NCC([O-])=O)=O)C)[H])C)[H])C 2D coordinates Mol file for the small molecule Search links Involved in 5 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:71847 | RHEA:71848 | RHEA:71849 | RHEA:71850 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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Expression, transport properties, and chromosomal location of organic anion transporter subtype 3.
Walters H.C., Craddock A.L., Fusegawa H., Willingham M.C., Dawson P.A.
The rat and mouse organic anion-transporting polypeptides (oatp) subtype 3 (oatp3) were cloned to further define components of the intestinal bile acid transport system. In transfected COS cells, oatp3 mediated Na(+)-independent, DIDS-inhibited taurocholate uptake (Michaelis-Menten constant approx ... >> More
The rat and mouse organic anion-transporting polypeptides (oatp) subtype 3 (oatp3) were cloned to further define components of the intestinal bile acid transport system. In transfected COS cells, oatp3 mediated Na(+)-independent, DIDS-inhibited taurocholate uptake (Michaelis-Menten constant approximately 30 microM). The oatp3-mediated uptake rates and affinities were highest for glycine-conjugated dihydroxy bile acids. In stably transfected, polarized Madin-Darby canine kidney (MDCK) cells, oatp3 mediated only apical uptake of taurocholate. RT-PCR analysis revealed that rat oatp3, but not oatp1 or oatp2, was expressed in small intestine. By RNase protection assay, oatp3 mRNA was readily detected down the length of the small intestine as well as in brain, lung, and retina. An antibody directed to the carboxy terminus localized oatp3 to the apical brush-border membrane of rat jejunal enterocytes. The mouse oatp3 gene was localized to a region of mouse chromosome 6. This region is syntenic with human chromosome 12p12, where the human OATP-A gene was mapped, suggesting that rodent oatp3 is orthologous to the human OATP-A. These transport and expression properties suggest that rat oatp3 mediates the anion exchange-driven absorption of bile acids previously described for the proximal small intestine. << Less
Am. J. Physiol. 279:G1188-G1200(2000) [PubMed] [EuropePMC]
This publication is cited by 4 other entries.
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OSTalpha-OSTbeta: a major basolateral bile acid and steroid transporter in human intestinal, renal, and biliary epithelia.
Ballatori N., Christian W.V., Lee J.Y., Dawson P.A., Soroka C.J., Boyer J.L., Madejczyk M.S., Li N.
The cellular and subcellular localization and mechanism of transport of the heteromeric organic solute transporter (OST) OSTalpha-OSTbeta was examined in human and rodent epithelia. The two subunits of the transporter were expressed together in human small intestine, kidney, and liver, tissues tha ... >> More
The cellular and subcellular localization and mechanism of transport of the heteromeric organic solute transporter (OST) OSTalpha-OSTbeta was examined in human and rodent epithelia. The two subunits of the transporter were expressed together in human small intestine, kidney, and liver, tissues that also express the apical sodium-dependent bile acid uptake transporter ASBT (SLC10A2). Indirect immunofluorescence microscopy localized OSTalpha and OSTbeta to the basolateral membrane of mouse, rat, and human ileal enterocytes, renal proximal tubular cells, and cholangiocytes. Transport in OSTalpha-OSTbeta-expressing Xenopus laevis oocytes was unaffected by depletion of intracellular adenosine triphosphate, or by changes in transmembrane Na(+), K(+), H(+), or Cl(-) concentration gradients. However, the oocytes demonstrated robust substrate efflux and trans-stimulation, indicating that transport occurs by facilitated diffusion. Madin Darby canine kidney cells coexpressing mouse Ostalpha and Ostbeta exhibited enhanced apical to basolateral transport of the major glycine and taurine conjugated bile acid species. In conclusion, the selective localization of OSTalpha and OSTbeta to the basolateral plasma membrane of epithelial cells responsible for bile acid and sterol reabsorption, the substrate selectivity of the transporter, and the facilitated diffusion transport mode collectively indicate that OSTalpha-OSTbeta is a key basolateral transporter for the reabsorption of these important steroid-derived molecules. << Less
Hepatology 42:1270-1279(2005) [PubMed] [EuropePMC]
This publication is cited by 9 other entries.