A source of nonshivering thermogenesis in fur seal skeletal muscle.
The mitochondria from the subscapular muscle of naturally cold-stressed 10- to 15-year-old northern fur seals (Callorhinus ursinus) were loosely coupled upon isolation, whereas the mitochondria from the same muscle of warm-acclimated pups of the same age were tightly coupled. Thus, loose-coupled muscle mitochondria might provide an important vehicle for nonshivering thermogenesis in this species.
D000227:Adenine Nucleotides / Q000378:metabolism; D000818:Animals; D000833:Animals, Suckling; D001833:Body Temperature Regulation; D010872:Caniformia / Q000502:physiology*; D003080:Cold Temperature; D003576:Electron Transport Complex IV / Q000378:metabolism; D004734:Energy Metabolism; D046069:Fur Seals / Q000502:physiology*; D007700:Kinetics; D008931:Mitochondria, Muscle / Q000502:physiology; D009132:Muscles / Q000502:physiology*; D010101:Oxygen Consumption
D000227:Adenine Nucleotides; D003576:Electron Transport Complex IV