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:AT1G62200.1); similar to proton-dependent oligopeptide transport (POT) family protein [Arabidopsis thaliana] (TAIR:AT5G01180.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO15784.1); similar to hypothetical protein [Vitis vinifera] (GB:CAN72572.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO21509.1); contains InterPro domain TGF-beta receptor, type I/II