nab:B1sIIB91_02575 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) tryptophan 2,3-dioxygenase nab:B1sIIB91_02570 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynureninase