stp:Strop_0708 K02616 phenylacetic acid degradation operon negative regulatory protein | (GenBank) transcriptional regulator, PaaX family stp:Strop_3530 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynureninase stp:Strop_3531 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) Tryptophan 2,3-dioxygenase