title: A reverse type I spectral change observed with hemin and its possible significance with respect to cytochrome P-450.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003577:Cytochrome P-450 Enzyme System / Q000032:analysis*; D006418:Heme / Q000031:analogs & derivatives* / Q000032:analysis; D006427:Hemin / Q000032:analysis*; D008027:Light; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D013816:Thermodynamics
chemical_list: D006418:Heme; D006427:Hemin; D003577:Cytochrome P-450 Enzyme System