MFS transporter; part of the gene cluster that mediates the biosynthesis of aspergillic acid (PubMed:29674152). Probably involved in aspergillic acid metabolism and transport (PubMed:29674152). Secondary metabolite biosynthesis. Expressed during the earliest stages of maize kernel infection (PubMed:23834374). Leads to the production of a mixture of ferriaspergillin analogs with varying combinations of aspergillic acid and hydroxyaspergillic acid (PubMed:29674152). Belongs to the major facilitator superfamily. Monocarboxylate porter (TC 2.A.1.13) family.