title: Oxygenated cytochrome P-450cam: evidence against axial histidine ligation of iron.
mesh_terms: D002942:Circular Dichroism; D003577:Cytochrome P-450 Enzyme System; D006639:Histidine; D007501:Iron; D008024:Ligands; D009211:Myoglobin; D010100:Oxygen; D011166:Porphyrins; D011549:Pseudomonas / Q000201:enzymology
chemical_list: D008024:Ligands; D009211:Myoglobin; D011166:Porphyrins; D006639:Histidine; D003577:Cytochrome P-450 Enzyme System; D007501:Iron; D010100:Oxygen