MFS transporter involved in N-acetylglucosamine (GlcNAc) uptake (PubMed:19648376). Confers resistance to cycloheximide, 4-nitroquinoline-N-oxide, and 1,10-phenanthroline, and contributes to virulence (PubMed:12076781, PubMed:12589826). Expression is induced in presence of cycloheximide and 4-nitroquinoline-N-oxide (PubMed:12589826). Expression is up-regulated during biofilm formation (PubMed:25784162). Leads to increased susceptibility to cycloheximide, 4-nitroquinoline-N-oxide, and 1,10-phenanthroline, but not to actinomycin D, fluconazole, ketoconazole and colchicine (PubMed:12076781). Leads also to attenuated virulence in mice (PubMed:12076781). Belongs to the major facilitator superfamily. DHA1 family. Polyamines/proton antiporter (TC 2.A.1.2.16) subfamily.