Genome-wide distribution of linker histone H1.0 is independent of MeCP2.

Genome-wide distribution of linker histone H1.0 is independent of MeCP2.
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DOI:
10.1038/s41593-018-0155-8
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发表时间:
2018-06
影响因子:
25
通讯作者:
Zoghbi HY
Zoghbi HY
中科院分区:
医学1区
文献类型:
--
作者:
Ito-Ishida A;Yamalanchili HK;Shao Y;Baker SA;Heckman LD;Lavery LA;Kim JY;Lombardi LM;Sun Y;Liu Z;Zoghbi HY

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以前的研究表明,MeCP 2与连接组蛋白H1竞争,但这一假设从未在体内进行过测试。在这里,我们在小鼠前脑兴奋性神经元中进行Flag-taged-H1.0的ChIP-Seq。出乎意料的是,Flag-H1.0和MeCP 2占据相似的基因组区域,并且在MeCP 2耗尽后Flag-H1.0结合没有改变。此外,H1.0的轻度过表达没有改变MeCP 2结合,表明MeCP 2和H1.0的功能结合在很大程度上是独立的。
Previous studies suggested that MeCP2 competes with linker histone H1, but this hypothesis has never been tested in vivo. Here, we performed ChIP-Seq of Flag-tagged-H1.0 in mouse forebrain excitatory neurons. Unexpectedly, Flag-H1.0 and MeCP2 occupied similar genomic regions and the Flag-H1.0 binding was not changed upon MeCP2 depletion. Furthermore, mild overexpression of H1.0 did not alter MeCP2 binding, suggesting that the functional binding of MeCP2 and H1.0 are largely independent.
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