Some features of biochemistry of deep-sea fish muscles
General composition of skeletal muscles from three deep-sea fish species was searched and compared with mesopelagic and ground fish species. Qualitative and quantitative composition of myofibril proteins is defined. The myofibril proteins from muscles of Albatrossia pectoralis and Laemonema longipes are characterized by higher content of minor components (11.6 and 7.5 %) than the myofibril proteins from Coryphaenoides cinereus (4.9 %), but the last ones are similar with mesopelagic and ground fish. All deep-sea species are distinguished by lower myosin/actin ratio of actomyosin complex (2.602.73). The content of minor components of myofibril proteins and the myosin/actin ratio of actomyosin depend on water content in the muscle tissue.