Probable permease for arginine and lysine. Expression is negatively regulated by the transcriptional repressors NRG1 and TUP1 (PubMed:11532938, PubMed:11737641). Expression is also regulated by SSN6 (PubMed:15814841). Expression is repressed by HAP43 (PubMed:21592964). Expression is induced by antifungal agents caspofungin and flucytosine (PubMed:15917516). Finally, expression is also induced during biofilm development (PubMed:19527170, PubMed:22265407). Belongs to the amino acid-polyamine-organocation (APC) superfamily. YAT (TC 2.A.3.10) family.