Multidrug resistance protein; part of the gene cluster that mediates the biosynthesis of siderophore ferrichrome A which is contributing to organismal virulence (PubMed:17138696, Ref.4). Expression regulated by iron through the urbs1 transcription factor (PubMed:17138696). Belongs to the ABC transporter superfamily. ABCC family. Conjugate transporter (TC 3.A.1.208) subfamily. Extended N-terminus.