proton-dependent oligopeptide transport (POT) family protein. similar to ATPTR2-B (NITRATE TRANSPORTER 1), transporter [Arabidopsis thaliana] (TAIR:AT2G02040.1); similar to proton-dependent oligopeptide transport (POT) family protein [Arabidopsis thaliana] (TAIR:AT3G54140.1); similar to proton-dependent oligopeptide transport (POT) family protein [Arabidopsis thaliana] (TAIR:AT2G02020.1); similar to LeOPT1 [Lycopersicon esculentum] (GB:AAD01600.1); similar to peptide transporter [Hakea actites] (GB:ABR32183.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO42444.1); contains InterPro domain TGF-beta receptor, type I/II extracellu