title: Central role of tryptophan pyrrolase in haem metabolism.
mesh_terms: D000624:5-Aminolevulinate Synthetase / Q000378:metabolism; D000818:Animals; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism; D006418:Heme / Q000378:metabolism*; D006420:Hemeproteins / Q000378:metabolism; D006801:Humans; D008099:Liver / Q000201:enzymology; D013045:Species Specificity; D014366:Tryptophan Oxygenase / Q000378:metabolism*
chemical_list: D006420:Hemeproteins; D006418:Heme; D003577:Cytochrome P-450 Enzyme System; D014366:Tryptophan Oxygenase; D000624:5-Aminolevulinate Synthetase