ATPUP3 (Arabidopsis thaliana purine permease 3); purine transmembrane transporter. Identical to Purine permease 3 (PUP3) [Arabidopsis Thaliana] (GB:Q9FZ95); similar to ATPUP2 (Arabidopsis thaliana purine permease 2) [Arabidopsis thaliana] (TAIR:AT2G33750.2); similar to unnamed protein product [Vitis vinifera] (GB:CAO61650.1); similar to hypothetical protein [Vitis vinifera] (GB:CAN64392.1); contains InterPro domain Protein of unknown function DUF6, transmembrane; (InterPro:IPR000620); contains InterPro domain Protein of unknown function DUF250 (InterPro:IPR004853)