proton-dependent oligopeptide transport (POT) family protein. similar to ATPTR3/PTR3 (PEPTIDE TRANSPORTER PROTEIN 3), transporter [Arabidopsis thaliana] (TAIR:AT5G46050.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO41469.1); contains InterPro domain TGF-beta receptor, type I/II extracellular region; (InterPro:IPR000109); contains InterPro domain MFS general substrate transporter (InterPro:IPR016196)