Amino-acid permease that is able to transport phenylalanine (PubMed:21764911, PubMed:28028545). Expression is under control of the CSY1 amino-acid sensor (PubMed:28028545). Expression is also regulated by PLC1 and GCN4 (PubMed:16207920, PubMed:16215176). Expression is induced during development of biofilm (PubMed:22265407). Belongs to the amino acid-polyamine-organocation (APC) superfamily. YAT (TC 2.A.3.10) family.