>sp|B2U3Z3|PPNP_SHIB3 Pyrimidine/purine nucleoside phosphorylase OS=Shigella boydii serotype 18 GN=ppnP MLQSNEYFSGKVKSIGFSSSSTGRASVGVMVEGEYTFSTAEPEEMTVISGALNVLLPDAT DWQVYEAGSVFNVPGHSEFHLQVAEPTSYLCRYL