oih:OB0754 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) tryptophan 2,3-dioxygenase oih:OB0756 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynureninase (L-kynurenine hydrolase) oih:OB0755 K07130 arylformamidase [EC:3.5.1.9] | (GenBank) hypothetical conserved protein