# OC Root 2nd 3rd 4th PC Gene/Definition OC.210950 Bacteria.289639 Proteobacteria.556757 Deltaproteobacteria.45328 samy.2960 samy:DB32_002888 Purine nucleoside phosphorylase; K03783 purine-nucleoside phosphorylase [EC:2.4.2.1]