Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
15
pubmed:dateCreated
1983-11-23
pubmed:abstractText
Calmodulin-dependent protein phosphatase, one of the major calmodulin-binding proteins in bovine brain, dephosphorylates casein with a specific activity of 15 nmol mg-1 min-1 at 30 degrees C. The stimulation of phosphatase activity by calmodulin is reversed by ethylene glycol bis (beta-aminoethyl ether)-N,N,N',N'-tetraacetic acid or trifluoperazine, a calmodulin antagonist. Antibodies raised in rabbit against the phosphatase inhibit the enzyme activity. The levels of the protein in brain extracts from various animals, determined by a radioimmunoassay, range from 20 micrograms/g of tissue in chick and fish brains to 143 micrograms in rat cerebrum. The ontogeny of the phosphatase was studied in nervous tissues from rat and chick, animals in which synaptogenesis takes place at different times during their development. The levels of the protein increased significantly in rat cerebrum and cerebellum and in chick brain and retina during the periods corresponding to major synapse formation. In rat cerebrum, the enzyme appeared to be equally distributed between the cytosol and the particulate fraction; the level in both compartments increased during the major period of synapse formation. Thus, the development of calmodulin-dependent protein phosphatase closely parallels synaptogenesis, implicating a role in some synaptic function.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
19
pubmed:volume
22
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3630-5
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Calmodulin-dependent protein phosphatase: a developmental study.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't