srn:A4G23_02955 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) kynA; Tryptophan 2,3-dioxygenase srn:A4G23_02956 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynU; Kynureninase srn:A4G23_02957 no KO assigned | (GenBank) Alpha/beta hydrolase family protein