pnp:IJ22_29880 K03816 xanthine phosphoribosyltransferase [EC:2.4.2.22] | (GenBank) xanthine phosphoribosyltransferase pnp:IJ22_29870 K16169 xanthine permease | (GenBank) xanthine permease pnp:IJ22_08200 K01142 exodeoxyribonuclease III [EC:3.1.11.2] | (GenBank) exodeoxyribonuclease III