lmmol · Proteins

Solute carrier family 22 member 6

UniProt Q4U2R8 Organism Homo sapiens Gene OAT1, PAHT, SLC22A6

Also known as: OAT1, PAHT, SLC22A6

Function

Secondary active transporter that functions as a Na(+)-independent organic anion (OA)/dicarboxylate antiporter where the uptake of one molecule of OA into the cell is coupled with an efflux of one molecule of intracellular dicarboxylate such as 2-oxoglutarate or glutarate. Mediates the uptake of OA across the basolateral side of proximal tubule epithelial cells, thereby contributing to the renal elimination of endogenous OA from the systemic circulation into the urine. Functions as a biopterin transporters involved in the uptake and the secretion of coenzymes tetrahydrobiopterin (BH4), dihydrobiopterin (BH2) and sepiapterin to urine, thereby determining baseline levels of blood biopterins. Transports prostaglandin E2 (PGE2) and prostaglandin F2-alpha (PGF2-alpha) and may contribute to their renal excretion. Also mediates the uptake of cyclic nucleotides such as cAMP and cGMP. Involved in the transport of neuroactive tryptophan metabolites kynurenate (KYNA) and xanthurenate (XA) and may contribute to their secretion from the brain. May transport glutamate. Also involved in the disposition of uremic toxins and potentially toxic xenobiotics by the renal organic anion secretory pathway, helping reduce their undesired toxicological effects on the body. Uremic toxins include the indoxyl sulfate (IS), hippurate/N-benzoylglycine (HA), indole acetate (IA), 3-carboxy-4- methyl-5-propyl-2-furanpropionate (CMPF) and urate. Xenobiotics include the mycotoxin ochratoxin (OTA). May also contribute to the transport of organic compounds in testes across the blood-testis-barrier.

Classification

Family (Pfam)
PF00083 Sugar_tr
InterPro
MFS_dom, MFS_sugar_transport-like, MFS_trans_sf, Orgcat_transp/SVOP
Functional cluster
G Protein-Coupled Receptors

Experimental structures · PDB · 12

A predicted model is available from AlphaFold.

Gene Ontology · 20

Drugs targeting this protein · 2

Related proteins · sequence + function similarity

Co-cited proteins · studied together in the literature

Literature · 24 cited papers

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