SLC13A3 (solute carrier family 13, member 3) belongs to SLC13 family of five members. This family is divided into Na+-sulphate (NaS) cotransporters and Na+-carboxylate (NaC) cotransporters, and SLC13A3 belongs to the latter group. It is a transporter with 12 transmembrane regions, and is composed of 602 amino acids. This gene maps to human chromosome 20q12-13.1, spans more than 80kb, and has 13 exons, and 12 introns. It has three predicted N-linked glycosylation sites. It is localized to the proximal tubule cells in the basolateral membrane. It is also expressed in brain, liver, pancreas and placenta.
Synonyms: Anti-Na(+)/dicarboxylate cotransporter 3; Anti-NaDC-3; Anti-Sodium-dependent high-affinity dicarboxylate transporter 2; Anti-Solute carrier family 13 member 3; Anti-hNaDC3
Storage: -20C
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Biochem Physiol Actions: SLC13A3 (solute carrier family 13, member 3) acts in collaboration with organic anion transporter 1 (OAT1) and OAT3) to facilitate the release of multiple endogenous and exogenous organic ions. It provides intracellular a-ketoglutarate, in a Na+-dependent manner, to OAT1 and 3, to allow for organic anion/dicarboxylate exchange. It is a glutathione (GSH) transporter of low-affinity. It is responsible for the uptake of GSH by the proximal tubule cells of basolateral membrane, in a sodium-dependent manner. Mutations in this gene might have a link to idiopathic nephrolithiasis. This transporter is also responsible for the uptake of N-carbamoylglutamate (NCG) from blood. NCG is a drug which is used to treat inborn n-acetylglutamate synthase deficiency. SLC13A3 might be involved in myelination, as it is responsible for the Na+-dependent transport of N-acetylaspartate in brain.
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