DNA sampling: a method for probing protein binding at specific loci on bacterial chromosomes.

DNA sampling: a method for probing protein binding at specific loci on bacterial chromosomes.
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DOI:
10.1093/nar/gkp043
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发表时间:
2009-04
影响因子:
14.9
通讯作者:
Lee DJ
Lee DJ
中科院分区:
生物学2区
文献类型:
--
作者:
Butala M;Busby SJ;Lee DJ

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我们描述了一个协议,DNA采样,用于快速分离的特定片段的DNA,连同结合的蛋白质,从大肠杆菌K-12。待采样的DNA通过酵母I-SceI大范围核酸酶在细胞内产生为离散片段,并使用FLAG标记的LacI阻遏物和携带抗FLAG抗体的珠粒进行纯化。我们通过研究在大肠杆菌素K基因启动子诱导之前或之后与大肠杆菌素K基因调节区结合的蛋白质来说明该方法。
We describe a protocol, DNA sampling, for the rapid isolation of specific segments of DNA, together with bound proteins, from Escherichia coli K-12. The DNA to be sampled is generated as a discrete fragment within cells by the yeast I-SceI meganuclease, and is purified using FLAG-tagged LacI repressor and beads carrying anti-FLAG antibody. We illustrate the method by investigating the proteins bound to the colicin K gene regulatory region, either before or after induction of the colicin K gene promoter.
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