pln:Plano_2491 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) tryptophan 2,3-dioxygenase pln:Plano_0839 K07130 arylformamidase [EC:3.5.1.9] | (GenBank) Kynurenine formamidase pln:Plano_0838 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynureninase