avq:HRR99_18880 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) tryptophan 2,3-dioxygenase avq:HRR99_18885 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynU; kynureninase