title: [Age peculiarities of actin polymerization in calves].
abstract: Studies have been made on the developmental changes in the polymerization degree of unfractionated actin extracts from skeletal muscles of 3-8-month calf embryos and adult cattle. It was shown that during the development, the polymerization capacity of actin increases, the increase being accompanied by a significant rise in the molecular weight of the protein. The pattern of age changes in the degree of polymerization of actin is similar to that in the molecular weight of actomyosin. Differences in fractional composition of actin extracts from skeletal muscles at various stages of embryonic development were observed. These differences may be responsible for age peculiarities of actin polymerization and may be associated with the formation of contractile activity in ontogenesis.
mesh_terms: D000199:Actins / Q000378:metabolism*; D000375:Aging; D000818:Animals; D002417:Cattle; D004622:Embryo, Mammalian; D005260:Female; D046911:Macromolecular Substances; D008970:Molecular Weight; D009119:Muscle Contraction; D024510:Muscle Development; D009132:Muscles / Q000378:metabolism*; D011247:Pregnancy; D011485:Protein Binding
chemical_list: D000199:Actins; D046911:Macromolecular Substances
vernacular_title: Osobennosti polimerizatsii aktina plodov telenka v razlichnye vozrastnye pernody