rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
3
|
pubmed:dateCreated |
1986-11-7
|
pubmed:abstractText |
Protein kinase C activity has been identified in cytosolic and membrane fractions from rat and rabbit small intestine epithelial cells. The cytosolic fraction comprised about the 75% of total activity. Protein kinase C activity was resolved from other protein kinase activities by ion exchange chromatography. Phosphatidylserine or phosphatidylinositol were required for protein kinase C to be active. In addition, the activity was enhanced by the presence of a diacylglycerol. Diolein and dimyristin were the most effective (13-14 fold activation). In the presence of phosphatidylserine and diolein, the Ka for activation by Ca2+ was 10(-7)M. The phorbol ester TPA substituted for diacylglycerol in activating protein kinase C. Brush border and basolateral membranes contained protein kinase C activity, although the specific activity of the basal lateral membranes was four-fold higher than the specific activity of the brush border membranes. The presence of PKC in small intestine epithelial cells might have important implications in the Ca2+ mediated control of ionic transport in this tissue.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Sep
|
pubmed:issn |
0006-291X
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
30
|
pubmed:volume |
139
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
875-82
|
pubmed:dateRevised |
2007-11-15
|
pubmed:meshHeading |
pubmed-meshheading:3768005-Animals,
pubmed-meshheading:3768005-Calcium,
pubmed-meshheading:3768005-Chromatography, Ion Exchange,
pubmed-meshheading:3768005-Cytosol,
pubmed-meshheading:3768005-Diglycerides,
pubmed-meshheading:3768005-Enzyme Activation,
pubmed-meshheading:3768005-Epithelium,
pubmed-meshheading:3768005-Intestine, Small,
pubmed-meshheading:3768005-Phosphatidylinositols,
pubmed-meshheading:3768005-Phosphatidylserines,
pubmed-meshheading:3768005-Protein Kinase C,
pubmed-meshheading:3768005-Rabbits,
pubmed-meshheading:3768005-Rats,
pubmed-meshheading:3768005-Tetradecanoylphorbol Acetate,
pubmed-meshheading:3768005-Tissue Distribution
|
pubmed:year |
1986
|
pubmed:articleTitle |
Protein kinase C from small intestine epithelial cells.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|