title: Possible participation of superoxide anion in the intestinal tryptophan 2,3-dioxygenase reaction.
mesh_terms: D000818:Animals; D002417:Cattle; D055598:Chemical Phenomena; D002621:Chemistry; D004789:Enzyme Activation; D004912:Erythrocytes / Q000201:enzymology; D005609:Free Radicals; D007422:Intestines / Q000201:enzymology*; D007700:Kinetics; D008099:Liver / Q000201:enzymology; D010084:Oxidation-Reduction; D010100:Oxygen; D010944:Plants / Q000201:enzymology; D011551:Pseudomonas fluorescens / Q000201:enzymology; D000644:Quaternary Ammonium Compounds; D011817:Rabbits; D051381:Rats; D014366:Tryptophan Oxygenase / Q000032:analysis
chemical_list: D005609:Free Radicals; D000644:Quaternary Ammonium Compounds; D014366:Tryptophan Oxygenase; D010100:Oxygen