title: Functional analysis of a complementary DNA for the 50-kilodalton subunit of calmodulin kinase II.
abstract: The calcium-calmodulin-dependent protein kinase II is a major component of brain synaptic junctions and has been proposed to play a variety of important roles in brain function. A complementary DNA representing a portion of the smaller 50-kilodalton subunit of the rat brain enzyme has been cloned and sequenced. The calmodulin-binding region has been identified and a synthetic analog prepared that binds calmodulin with high affinity in the presence of calcium. Like the 50-kilodalton kinase polypeptide, the concentration of the messenger RNA varies both neuroanatomically and during postnatal development of the brain. The broad tissue and species cross-reactivity of the complementary DNA suggests that the 50-kilodalton subunit found in rat brain is evolutionarily conserved and is the product of a single gene.
mesh_terms: D000367:Age Factors; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001681:Biological Assay; D001921:Brain / Q000201:enzymology / Q000254:growth & development; D017871:Calcium-Calmodulin-Dependent Protein Kinases; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics; D011494:Protein Kinases / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics; D051381:Rats; D013045:Species Specificity
chemical_list: D012333:RNA, Messenger; D004247:DNA; D011494:Protein Kinases; D017871:Calcium-Calmodulin-Dependent Protein Kinases