Organic acid transporter polypeptides OATP

Figure 2.1 Hepatocyte basolateral bile acid transporters. Protein-bound bile acids returning in portal blood are taken up by the hepatocyte via the sodium taurocholate co-transporting polypeptide (NTCP) and organic-anion-transporting polypeptide (OATP). In cholestasis bile acids may be returned to blood by the multi-drug-resistance-associated protein 3 (MRP3).

The drug uptake (SLC) family of transporter is the largest superfamily of transporters. This family includes 31 transporters from organic anion transporter polypeptides (OATPs), organic anion transporters (OATs), organic cation transporters (OCTs), peptide cotransporters (PEPTs), and sodium-bile acid cotransporter classes. Only OATP, OAT, OCT, and PEPT are primarily involved with the transport of drugs/xenobiotics. 

Immunohistochemical study ND not determined GLUT1 facilitative glucose transporter MCT1 monocarboxylate transporter CRT creatine transporter LAT1 L-type amino acid transporter TAUT taurine transporter ENT equilibrative nucleoside transporter Oatp organic anion-transporting polypeptide PAH p-aminohippuric acid RUI retinal uptake index TR-iBRB rat retinal capillary endothelial cells. 

OATP/oatp Organic anion transporting polypeptide (protein / nucleic acid)... 

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