Transcription factor distribution in Escherichia coli: studies with FNR protein.

Transcription factor distribution in Escherichia coli: studies with FNR protein.
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DOI:
10.1093/nar/gkl1023
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发表时间:
2007
影响因子:
14.9
通讯作者:
Busby SJ
Busby SJ
中科院分区:
生物学2区
文献类型:
--
作者:
Grainger DC;Aiba H;Hurd D;Browning DF;Busby SJ

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使用染色质免疫沉淀(ChIP)和高密度微阵列,我们已经测量了分布的全球转录调节蛋白,FNR,在整个大肠杆菌染色体在指数增长的细胞。共鉴定出63个结合靶点,每个靶点位于基因的5′端。一些靶标与转录不良的基因相邻,其中FNR对转录几乎没有影响。在稳定期,FNR的分布基本不变。对照实验表明,像FNR一样,当细胞进入稳定期时,核相关蛋白IHF的分布几乎没有改变,而RNA聚合酶经历了完全的重新分布。
Using chromatin immunoprecipitation (ChIP) and high-density microarrays, we have measured the distribution of the global transcription regulator protein, FNR, across the entire Escherichia coli chromosome in exponentially growing cells. Sixty-three binding targets, each located at the 5′ end of a gene, were identified. Some targets are adjacent to poorly transcribed genes where FNR has little impact on transcription. In stationary phase, the distribution of FNR was largely unchanged. Control experiments showed that, like FNR, the distribution of the nucleoid-associated protein, IHF, is little altered when cells enter stationary phase, whilst RNA polymerase undergoes a complete redistribution.
DOI: 10.1111/j.1365-2958.2005.04701.x
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