The function of ENSG00000142319 (SLC6A3, solute carrier family 6 member 3) is as follows. Mediates sodium- and chloride-dependent transport of dopamine (PubMed:10375632, PubMed:11093780, PubMed:1406597, PubMed:15505207, PubMed:19478460, PubMed:39112701, PubMed:39112703, PubMed:39112705, PubMed:8302271). Also mediates sodium- and chloride-dependent transport of norepinephrine (also known as noradrenaline) (By similarity). Regulator of light-dependent retinal hyaloid vessel regression, downstream of OPN5 signaling (By similarity). {ECO:0000250|UniProtKB:P23977, ECO:0000250|UniProtKB:Q61327, ECO:0000269|PubMed:10375632, ECO:0000269|PubMed:11093780, ECO:0000269|PubMed:1406597, ECO:0000269|PubMed:15505207, ECO:0000269|PubMed:19478460, ECO:0000269|PubMed:39112701, ECO:0000269|PubMed:39112703, ECO:0000269|PubMed:39112705, ECO:0000269|PubMed:8302271}.