title: [Interrelationship between two kinetic forms of pyruvate kinase in chicken liver during ontogenesis].
abstract: The value of the r coefficient for pyruvate kinase (rate at 1.5 mM of phosphoenolpyruvate per rate at 0.4 mM of phosphoenolpyruvate), i.e. ratio between the enzyme forms possessing the Michaelis-Menten and cooperative kinetics, in chicken liver during ontogenesis was found to be different. The embryonic liver contains predominantly the form with the cooperative kinetics, while in the livers of 1- and 10-day-old chickens the content of the other form is increased. In the livers of adult chicken the correlation between the two forms is that typical for 10-day-old chicken.
mesh_terms: D000375:Aging; D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D007527:Isoenzymes / Q000378:metabolism; D007700:Kinetics; D008099:Liver / Q000201:enzymology* / Q000254:growth & development; D011770:Pyruvate Kinase / Q000378:metabolism*
chemical_list: D007527:Isoenzymes; D011770:Pyruvate Kinase
vernacular_title: Sootnhoshenie mezhdu dvumia kinticheskimi formami piruvatkinazy v pecheni kuritsy v ontogeneze.