Efflux pump; part of the gene cluster that mediates the biosynthesis of depudecin, a highly oxidized eleven-carbon linear polyketide that acts as a histone deacetylase (HDAC) inhibitor and makes a small contribution to pathogenesis (PubMed:19737099, PubMed:28460114). Is presumed either to be responsible for exporting depudecin, to provide self-protection, or both (PubMed:19737099). Expression correlates with the production of depudecin with high levels on oat grain medium, and minimal levels on oat flower medium and complete medium (PubMed:28460114). Belongs to the major facilitator superfamily. TCR/Tet family.