SEARCH Articles Figures Tables A High-Valent Fe Intermediate of Tryptophan 2,3-Dioxygenase Amino acid tryptophan dioxygenase Dioxygenases Enzyme 1- Tryptophan 2,3-dioxygenase Glucagon, tryptophan dioxygenase Heme saturation, tryptophan dioxygenase Human tryptophan 2,3-dioxygenase Induction of Tryptophan Dioxygenase by Glucocorticoid Hormones NAD tryptophan dioxygenase Nicotinamide tryptophan dioxygenase Oxygenases tryptophan 2,3-dioxygenase Saturation of Tryptophan Dioxygenase with Its Heme Cofactor Tryptophan decarboxylase dioxygenase Tryptophane dioxygenase