spra:CP972_19300 K00453 tryptophan 2,3-dioxygenase [EC:1.13.11.11] | (GenBank) tryptophan 2,3-dioxygenase spra:CP972_19305 K01556 kynureninase [EC:3.7.1.3] | (GenBank) kynU; kynureninase spra:CP972_19310 no KO assigned | (GenBank) alpha/beta hydrolase