ABC-type transporter; part of the gene cluster that mediates the biosynthesis of the meroterpenoid compound andrastin A, a promising antitumoral compound (Ref.2). Is required for the production of andrastin A but does not have a significant role in its secretion (By similarity). Belongs to the ABC transporter superfamily. ABCG family. PDR (TC 3.A.1.205) subfamily.