ATP-dependent transporter of the ATP-binding cassette (ABC) family that actively extrudes physiological compounds, and xenobiotics from cells. Lipophilic anion transporter that mediates ATP-dependent transport of glucuronide conjugates such as estradiol-17-beta-o-glucuronide and GSH conjugates such as leukotriene C4 (LTC4) (, ). May contribute to regulate the transport of organic compounds in testes across the blood-testis-barrier (Probable). Mediates multidrug resistance (MDR) in cancer cells by preventing the intracellular accumulation of certain antitumor drugs, such as, docetaxel and paclitaxel (, ). Does not transport glycocholic acid, taurocholic acid, MTX, folic acid, cAMP, or cGMP .
Subcellular locations: Cell membrane, Basolateral cell membrane, Basal cell membrane
Localized to the basal membrane of Sertoli cells.
In testis, localized to peritubular myoid cells, Leydig cells, along the basal membrane of Sertoli cells, moderately in the adluminal compartment of the seminiferous tubules, and in vascular endothelial cells.
Specifically expressed in spleen.
Widely expressed.