title: Origin of the cytochrome a absorption red shift: a pH-dependent interaction between its heme a formyl and protein in cytochrome oxidase.
mesh_terms: D002942:Circular Dichroism; D017936:Cytochrome a Group; D003580:Cytochromes; D004578:Electron Spin Resonance Spectroscopy; D003576:Electron Transport Complex IV; D006863:Hydrogen-Ion Concentration; D010084:Oxidation-Reduction; D013057:Spectrum Analysis; D013059:Spectrum Analysis, Raman
chemical_list: D017936:Cytochrome a Group; D003580:Cytochromes; D003576:Electron Transport Complex IV