>tr|D2A8E0|D2A8E0_SHIF2 Pyrimidine/purine nucleoside phosphorylase OS=Shigella flexneri serotype X GN=yaiE MLQSNEYFSGKVKSIGFSSSSTGRASVGVMVEGEYTFSTAEPEEMTVISGALNVLLPDAT DWQVYEAGSVFNVPGHSEFHLQVAEPTSYLCRYL