Linked Life Data

1390777

Source:http://linkedlifedata.com/resource/pubmed/id/1390777

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
41
pubmed:dateCreated
1992-11-18
pubmed:abstractText
Insulin binding to its plasma membrane receptor stimulates a cascade of protein kinases and phosphatases which ultimately affects multiple processes in the membrane, cytosol, and nucleus of the cell, including transcription of specific genes. To gain insight into the relationship between the kinase cascade and the mechanism of insulin-induced nuclear events, we have studied the effect of insulin on the phosphorylation of DNA-binding nuclear proteins in differentiated NIH-3T3-F442A adipocytes. Insulin induced the phosphorylation of seven DNA-binding proteins: pp34, pp40, pp48, pp62, pp64, pp66, and pp72. The half-maximal response was observed at 10-30 min and reached its maximum at 60 min. The insulin-induced phosphorylation of each of these proteins was dose-dependent with ED50S of 2-10 nM. The phosphorylation of pp62, pp64, and pp72 took place on serine residues. On the basis of immunoprecipitation and immunoblotting experiments with anti-lamin antibodies, we found that the insulin-induced DNA-binding phosphoproteins pp62, pp64, pp66, and possibly pp48 were related to lamins A and C. The ED50 for insulin-stimulated lamin phosphorylation was approximately 10 nM, and phosphorylation was half-maximal at 30 min. The insulin-dependent phosphorylation of lamins and other DNA-binding proteins (pp34, pp40, and pp72) may play a mediatory role in the long-term effects of insulin.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
20
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
9940-6
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Insulin induces the phosphorylation of DNA-binding nuclear proteins including lamins in 3T3-F442A.
pubmed:affiliation
Research Division, Joslin Diabetes Center, Boston, Massachusetts 02215.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't