title: Spectroscopic properties of protoheme complexes undergoing reversible oxygenation.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D006420:Hemeproteins; D007093:Imidazoles; D007501:Iron; D010084:Oxidation-Reduction; D011498:Protein Precursors; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature
chemical_list: D006420:Hemeproteins; D007093:Imidazoles; D011498:Protein Precursors; D007501:Iron