MFS-type transporter; part of the lna gene cluster that mediates the biosynthesis of diastereomeric piperazines. Lna and lnb clusters encode sets of enzymes that produce overlapping sets of previously undescribed metabolites such as piperazinomycin-like metabolites or morpholine (PubMed:23281040). The lna and lnb biosynthetic pathways appear to be part of a signaling network that controls the formation of sclerotia, a resilient overwintering structure (PubMed:23281040). May be involved in the secretion of the metabolites produced by the lna and lnb clusters (Probable). Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family.