Oxygen kinetics of frozen cytochrome oxidase. The capacity of the oxygen pocket.
Low-temperature kinetics of the reaction between O2 and cytochrome oxidase suggest the existence of an O2 pocket of limited capacity in membrane-bound cytochrome oxidase, and one of larger capacity in purified cytochrome oxidase. A model is proposed to explain the difference in capacity of the pockets.
D000818:Animals; D002417:Cattle; D003080:Cold Temperature; D003576:Electron Transport Complex IV / Q000378:metabolism*; D066298:In Vitro Techniques; D007425:Intracellular Membranes / Q000201:enzymology; D007700:Kinetics; D008929:Mitochondria, Heart / Q000201:enzymology*; D008954:Models, Biological; D010100:Oxygen / Q000378:metabolism*
D003576:Electron Transport Complex IV; D010100:Oxygen