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rdf:type |
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lifeskim:mentions |
umls-concept:C0080065,
umls-concept:C0205224,
umls-concept:C0521447,
umls-concept:C1510411,
umls-concept:C1514562,
umls-concept:C1514873,
umls-concept:C1521761,
umls-concept:C1546857,
umls-concept:C1556066,
umls-concept:C1619636,
umls-concept:C1880389,
umls-concept:C1883204,
umls-concept:C1883221
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pubmed:issue |
3
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pubmed:dateCreated |
1995-3-23
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pubmed:abstractText |
Cell transformation by nuclear oncogenes such as c-myc presumably involves the transcriptional activation of a set of target genes that participate in the control of cell division. The function of a small evolutionarily conserved domain of the c-myc gene encompassing amino acids 129 to 145 was analyzed to explore the relationship between cell transformation and transcriptional activation. Deletion of this domain inactivated the c-myc oncogene for cell transformation while retaining the ability to activate transcription of either myc consensus binding sites or a GAL4-dependent promoter when the c-myc N-terminus was fused to the GAL4 DNA-binding domain. Point mutations that altered a conserved tryptophan (amino acid 136) within this domain had similar effects. Expression of the wt c-Myc N terminus (amino acids 1 to 262) as a GAL4 fusion was a dominant inhibitor of cell transformation by the c-myc oncogene, and this same domain also inhibited transformation by the adenovirus E1A gene. Surprisingly, deletion of amino acids 129 to 145 eliminated the dominant negative activity of GAL4-Myc on both c-myc and E1A transformation. Expression of the GAL4-Myc protein in Cos cells led to the formation of a specific complex between the Myc N terminus and a nuclear factor, and this complex was absent with the dl129-145 mutant. These results suggest that an essential domain of the c-Myc protein interacts with a specific nuclear factor that is also required for E1A transformation.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/7862146-1406955,
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http://linkedlifedata.com/resource/pubmed/commentcorrection/7862146-8494784
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Adenovirus E1A Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/DNA,
http://linkedlifedata.com/resource/pubmed/chemical/DNA-Binding Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Fungal Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/GAL4 protein, S cerevisiae,
http://linkedlifedata.com/resource/pubmed/chemical/Nuclear Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Oligodeoxyribonucleotides,
http://linkedlifedata.com/resource/pubmed/chemical/Proto-Oncogene Proteins c-myc,
http://linkedlifedata.com/resource/pubmed/chemical/Recombinant Fusion Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Saccharomyces cerevisiae Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Transcription Factors
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0270-7306
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
15
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pubmed:geneSymbol |
c-myc
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1536-44
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