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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1982-9-10
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pubmed:abstractText |
Normal human embryonic fibroblasts (CLV-58) and normal embryonic rat fibroblasts (REF) revealed equal growth in media containing 0.2 mM DL-homocysteine thiolactone (HOM) or in methionine (METH) enriched with 1.5 microM cyanocobalamin and 0.1 mM folic acid, whereas L 5178Y lymphoblasts and transformed rat fibroblasts (REF-S) showed more or less acute need for exogenous METH. In normal cells general protein synthesis remained unimpaired during 24 hours after substitution of METH by HOM. In L 5178Y and REF-S cells, however, protein synthesis was significantly inhibited. Measurements of N-5-methyltetrahydrofolate:homocysteine methyltransferase revealed a two- to threefold increase of enzyme activity in normal cells grown on HOM and in L 5178Y and REF-S cells grown on HOM with added METH. HeLa cells showed variability in growth pattern, in general protein synthesis response, and in inducibility of methyltransferase upon substitution of METH by HOM.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0027-8874
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
69
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
9-14
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6954326-Animals,
pubmed-meshheading:6954326-Cell Division,
pubmed-meshheading:6954326-Cell Transformation, Neoplastic,
pubmed-meshheading:6954326-Cells, Cultured,
pubmed-meshheading:6954326-Cricetinae,
pubmed-meshheading:6954326-Cricetulus,
pubmed-meshheading:6954326-Enzyme Induction,
pubmed-meshheading:6954326-Female,
pubmed-meshheading:6954326-Fibroblasts,
pubmed-meshheading:6954326-HeLa Cells,
pubmed-meshheading:6954326-Homocysteine,
pubmed-meshheading:6954326-Homocysteine S-Methyltransferase,
pubmed-meshheading:6954326-Humans,
pubmed-meshheading:6954326-Methionine,
pubmed-meshheading:6954326-Methyltransferases,
pubmed-meshheading:6954326-Pregnancy,
pubmed-meshheading:6954326-Protein Biosynthesis,
pubmed-meshheading:6954326-Rats
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pubmed:year |
1982
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pubmed:articleTitle |
Methionine regulation of N-5-methyltetrahydrofolate: homocysteine methyltransferase and its influence on the growth and protein synthesis in normal, neoplastic, and transformed cells in culture.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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