purine permease family protein. Identical to Probable purine permease 9 (PUP9) [Arabidopsis Thaliana] (GB:O49726); similar to ATPUP10 (Arabidopsis thaliana purine permease 10), purine transmembrane transporter [Arabidopsis thaliana] (TAIR:AT4G18210.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO66911.1); contains InterPro domain Protein of unknown function DUF250 (InterPro:IPR004853)