[Use of properties and regulation peculiarities of enzymes of glycogenolysis in fish skeletal muscle depending on peculiarities of motor activity of species].
Levels of activity, properties, and peculiarities of activation of glycogen phosphorylase (GP; EC 2.4.1.1) and glycogen phosphorylase kinase (GPK; EC 2.7.1.38) were studied in the white skeletal muscle of fish differing in motor behavior. No differences in the GP and GPK activity levels were revealed in laskir Diplodus annularis (L.), horse mackerel Trachurus mediterraneus ponticus, salmon Salmo trutta morphario, scorpena Scorpaena porcus, Scophtalnus maeoticus, and carp Cyprinus carpio; however, properties of the isolated enzymes and peculiarities of formation of their activated forms during swimming in a hydrodynamic tube are determined by functional peculiarities of the muscle tissue and are associated with the motor activity character of the species. In fish capable for the spurt type of swimming (scorpena, salmon) the more rapid ion regulation plays the predominant role. In other species, the glycogenolysis hormonal regulation leading to a change of the GPK activity index has been found.
Serebrenikova
T P
TP
Nesterov
V P
VP
D000818:Animals; D005399:Fishes / Q000378:metabolism*; D006003:Glycogen / Q000737:chemistry / Q000378:metabolism*; D024981:Glycogen Phosphorylase / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D009043:Motor Activity / Q000502:physiology*; D018482:Muscle, Skeletal / Q000201:enzymology*; D010764:Phosphorylase Kinase / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D011817:Rabbits; D013045:Species Specificity
D006003:Glycogen; D024981:Glycogen Phosphorylase; D010764:Phosphorylase Kinase