Document Detail

Mid-G1 marker protein(s) in 3T3 mouse fibroblast cells.
MedLine Citation:
PMID:  283406     Owner:  NLM     Status:  MEDLINE    
Quiescent 3T3 mouse fibroblast cells in a state of growth arrest due to serum deprivation were exposed to [14C]isoleucine. The cell cultures were then stimulated by the addition of 10% fetal calf serum. At various times after stimulation, the 14C-labeled cells were exposed to [3H]isoleucine. Cytoplasmic extracts from the double-labeled cells were subjected to sodium dodecyl sulfate/slab gel electrophoresis. By these procedures it was found that the relative rate of synthesis of a protein species of Mr 50,000 increased after stimulation of quiescent cells, reached a maximum at 5 hr, and then decreased before the 3T3 cells began to enter the S phase. The characteristic peaking profile of mid-G1 protein synthesis exhibited by the Mr 50,000 polypeptide can serve as a useful marker for the progression of events in G1 prior to exit into S.
B J Gates; M Friedkin
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  75     ISSN:  0027-8424     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  1978 Oct 
Date Detail:
Created Date:  1979-04-25     Completed Date:  1979-04-25     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  4959-61     Citation Subset:  IM    
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MeSH Terms
Cell Cycle*
Cell Line
Isoleucine / metabolism
Proteins / metabolism*
Time Factors
Reg. No./Substance:
0/Proteins; 73-32-5/Isoleucine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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