ABC-type transporter; part of the gene cluster that mediates the biosynthesis of erinacines, cyathane-xylosides that show unique biological activities, including leishmanicidal activity, stimulating activity for nerve growth-factor synthesis, and agonistic activity toward the kappa opioid receptor. Belongs to the ABC transporter superfamily. ABCG family. PDR (TC 3.A.1.205) subfamily.