sxn:IAG42_18815 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) tryptophan 2,3-dioxygenase sxn:IAG42_18820 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynU; kynureninase sxn:IAG42_18825 no KO assigned | (GenBank) alpha/beta hydrolase