bxb:DR64_2901 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) kynA; tryptophan 2,3-dioxygenase bxb:DR64_2902 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynU; kynureninase