DNA-bound Fos proteins activate transcription in yeast

DNA-bound Fos proteins activate transcription in yeast
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DNA 结合的 Fos 蛋白激活酵母中的转录

DOI:
10.1016/0092-8674(88)90506-5
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发表时间:
1988
期刊:
影响因子:
64.5
通讯作者:
R. Brent
R. Brent
中科院分区:
生物学1区
文献类型:
--
作者:
Karen Lech;Kate Anderson;R. Brent

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我们构建了编码细菌LexA抑制子DNA结合区的基因,并将其与v-fos和c-fos癌基因产物融合。由此产生的LexA-Fos融合蛋白激活了酵母中的转录。这些蛋白质的转录激活作用与酵母天然蛋白质的转录激活作用一样强。LexA-Fos融合蛋白只有在与插入在这些基因上游的LexA结合部位结合时,才能激活基因的转录。LexA的DNA结合区与vMyc和cMyc融合的相似蛋白质对转录的激活作用较弱。天然LexA或含有LexA DNA结合域的蛋白与434噬菌体抑制子或酵母垫蛋白融合后不能激活转录。这些结果表明,当Fos蛋白与启动子DNA结合时,它们激活了真核基因的表达,从而表明Fos蛋白发挥了一些作用,因为它们刺激了细胞基因的转录。酵母中Fos和Myc蛋白对转录的调节提供了一种表型,这可能有助于对这些蛋白质在高等生物中的功能进行遗传分析。
We constructed genes encoding the DNA binding region of the bacterial LexA repressor fused to the v-fos and c-fos oncogene products. The resulting LexA-Fos fusion proteins activated transcription in yeast. Transcription activation by these proteins was as strong as transcription-activation by proteins native to yeast. LexA-Fos fusion proteins only activated transcription of genes when they were bound to LexA binding sites inserted upstream of those genes. Transcription was activated less strongly by similar proteins in which the DNA binding region of LexA was fused to vMyc and cMyc. Transcription was not activated by native LexA or by proteins containing the DNA binding domain of LexA fused to bacteriophage 434 repressor or yeast MAT& protein. These results demonstrate that Fos proteins activate eukaryotic gene expression when they are bound to promoter DNA, and thus suggest that Fos proteins exert some of their effects because they stimulate transcription of cellular genes. Regulation of transcription by Fos and Myc proteins in yeast provides a phenotype that may facilitate genetic analysis of the function of these proteins in higher organisms.
myc 癌基因蛋白和小核核糖核蛋白颗粒的共定位。
DOI: 10.1101/sqb.1986.051.01.107
发表时间: 1986
期刊: Cold Spring Harbor symposia on quantitative biology
影响因子: --
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DOI: 10.1073/pnas.84.10.3316
发表时间: 1987-05
影响因子: 11.1
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DOI: 10.1126/science.3080805
发表时间: 1986-02-14
期刊: SCIENCE
影响因子: 56.9
作者:
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通讯作者: PTASHNE, M
DOI: 10.1126/science.2825349
发表时间: 1987-12-04
期刊: SCIENCE
影响因子: 56.9
作者:
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通讯作者: TJIAN, R