The function of Ensembl gene identifier ENSG00000142494 (SLC47A1, solute carrier family 47 member 1) is as follows. Multidrug efflux pump that functions as a H(+)/organic cation antiporter (PubMed:16330770, PubMed:17509534). Plays a physiological role in the excretion of cationic compounds including endogenous metabolites, drugs, toxins through the kidney and liver, into urine and bile respectively (PubMed:16330770, PubMed:17495125, PubMed:17509534, PubMed:17582384, PubMed:18305230, PubMed:19158817, PubMed:21128598, PubMed:24961373). Mediates the efflux of endogenous compounds such as creatinine, vitamin B1/thiamine, agmatine and estrone-3-sulfate (PubMed:16330770, PubMed:17495125, PubMed:17509534, PubMed:17582384, PubMed:18305230, PubMed:19158817, PubMed:21128598, PubMed:24961373). May also contribute to regulate the transport of cationic compounds in testis across the blood-testis-barrier (Probable). {ECO:0000269|PubMed:16330770, ECO:0000269|PubMed:17495125, ECO:0000269|PubMed:17509534, ECO:0000269|PubMed:17582384, ECO:0000269|PubMed:18305230, ECO:0000269|PubMed:19158817, ECO:0000269|PubMed:21128598, ECO:0000269|PubMed:24961373, ECO:0000305|PubMed:35307651}.