title: Studies on the content and organization of the respiratory enzymes of mitochondria.
abstract: (1) The mathematical calculations relating spectrophotometric data with the data of Allard et al. (4, 5) on mitochondrial counts, is presented. Such a calculation indicates that an "average mitochondrion" from rat liver would contain about 17,000 molecules of each cytochrome pigment. (2) Hematocrit determinations relating respiratory pigment content for mitochondria isolated from a variety of tissues have been presented, showing a fivefold variability depending upon the source of the mitochondria. (3) Speculations on the organization of the respiratory enzymes associated with the membrane structure of the mitochondria are discussed.
mesh_terms: D000818:Animals; D003580:Cytochromes; D004798:Enzymes / Q000737:chemistry*; D008928:Mitochondria / Q000737:chemistry*; D051381:Rats
chemical_list: D003580:Cytochromes; D004798:Enzymes
keywords: ENZYMES/chemistry; MITOCHONDRIA/chemistry