ABC transporter; part of the gene cluster that mediates the biosynthesis of beauvericin (BEA), a non-ribosomal cyclic hexadepsipeptide that shows antibiotic, antifungal, insecticidal, and cancer cell antiproliferative and antihaptotactic activity (PubMed:27750383). Functions as a regulator of beauvericin production, rather than in BEA transport out of the cell (PubMed:27750383). Beauvericin has low toxicity to the producing fungus and BEA3 does not play a role in detoxification and self-protection of the producing fungus (PubMed:27750383). Expression is highly repressed by the histone deacetylase HDA1 and the beauvericin cluster-specific repressor BEA4 (PubMed:27750383). BEA biosynthesis is also repressed by the activity of the H3K27 methyltransferase KMT6 (PubMed:27750383). Does not affect the production of beauvericin but increases the expression of BEA1 and BEA2 (PubMed:27750383). Belongs to the ABC transporter superfamily. ABCB family. Multidrug resistance exporter (TC 3.A.1.201) subfamily.