SLC22 family

In the renal epithelium, many uptake transporters are localized in the basolateral membrane and efflux transporters are localized in the apical membrane (Figure 15.2). As a result, vectorial transport of endogenous substances and of drugs from the blood into the urine is achieved. The important uptake transporters are members of the SLC22 family of solute carriers, especially the family members OCT2 and OAT2, which are highly expressed in human kidney. 

One of the many families included in the MFS is the SLC (solute carrier) superfamiiy. The SLC superfamiiy represents approximately 300 genes in the human genome that encode for either facilitated transporters or secondary active symporters or antiporters. Members of the SLC superfamiiy transport various ionic and nonionic endogenous compounds and xenobiotics. The SLC22 family includes anion and cation transporters (Organic Anion Transporters, OATs Organic Cation Transporters, OCTs). 

Rizwan AN, Burckhardt G. Organic anion transporters of the SLC22 family biopharmaceutical, physiological, and pathological roles. Pharm. Res. 2007 24 450-470. 

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