title: The transmembrane helices of beef heart cytochrome oxidase.
mesh_terms: D000818:Animals; D002417:Cattle; D003576:Electron Transport Complex IV; D046911:Macromolecular Substances; D008565:Membrane Proteins; D009206:Myocardium / Q000201:enzymology*; D011487:Protein Conformation
chemical_list: D046911:Macromolecular Substances; D008565:Membrane Proteins; D003576:Electron Transport Complex IV