rfa:A3L23_02296 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynU; Kynureninase rfa:A3L23_02295 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) kynA; Tryptophan 2,3-dioxygenase