title: Molecular oxygen in biological oxidations--an overview.
mesh_terms: D001665:Binding Sites; D003300:Copper; D007501:Iron; D010088:Oxidoreductases / Q000378:metabolism*; D010100:Oxygen; D011166:Porphyrins
chemical_list: D011166:Porphyrins; D003300:Copper; D007501:Iron; D010088:Oxidoreductases; D010100:Oxygen