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Increased phosphorylation of a membrane protein consequent to amygdaloid kindling.

Authors
  • Patel, J
  • Marangos, P J
  • Contel, N
  • Gardner, G
  • Post, R M
Type
Published Article
Journal
Journal of neurochemistry
Publication Date
Jul 01, 1984
Volume
43
Issue
1
Pages
169–173
Identifiers
PMID: 6726244
Source
Medline
License
Unknown

Abstract

The phosphorylation of both particulate and soluble proteins in the amygdala was examined in electrically kindled rats. In animals receiving electrical stimulation in the left amygdala for 5-6 days that displayed electrical after-discharges but no motor seizures, no changes were observed in the phosphorylation of either particulate or soluble proteins. In animals stimulated for 20-21 days where major motor seizures were produced, the phosphorylation of a protein having a molecular weight of 45,000 ( 45K ) was markedly increased. The phosphorylation of this protein was increased in both the right (unstimulated) and left (stimulated) amygdala. Major motor seizures induced by electroconvulsive shocks, however, did not alter phosphorylation of this protein. Phosphorylation of the 45K protein was stimulated by calcium and calmodulin. The 45K protein is a major phosphoprotein of amygdala, representing 3.2% of the total particulate phosphoproteins in control animals and 7.4% in the kindled animals. In the presence of calcium-calmodulin, 16.2% of net protein phosphorylation was accounted for by the 45K protein.

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