DNA replication timing of the human beta-globin domain is controlled by histone modification at the origin.

DNA replication timing of the human beta-globin domain is controlled by histone modification at the origin.
复制标题

人类 β-珠蛋白结构域的 DNA 复制时间由起始点的组蛋白修饰控制。

DOI:
--
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发表时间:
2008
影响因子:
10.5
通讯作者:
H. Cedar
H. Cedar
中科院分区:
生物学1区
文献类型:
--
作者:
A. Goren;A. Tabib;M. Hecht;H. Cedar

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人类β-珠蛋白基因构成发育调节的大染色体域。在非红系细胞中,这些基因在S期后期复制,而在红系细胞中,复制是早期的。复制起点在红系细胞中与乙酰化组蛋白包装在一起,但在非红系细胞中与脱乙酰化组蛋白相关。组蛋白乙酰化酶募集到这个来源,导致淋巴细胞中不依赖转录的早期复制转变。相比之下,成红细胞中组蛋白脱乙酰基酶的束缚导致向晚期复制的转变。这些结果表明,组蛋白修饰的起点作为一个二元开关控制复制时间。
The human beta-globin genes constitute a large chromosomal domain that is developmentally regulated. In nonerythroid cells, these genes replicate late in S phase, while in erythroid cells, replication is early. The replication origin is packaged with acetylated histones in erythroid cells, yet is associated with deacetylated histones in nonerythroid cells. Recruitment of histone acetylases to this origin brings about a transcription-independent shift to early replication in lymphocytes. In contrast, tethering of a histone deacetylase in erythroblasts causes a shift to late replication. These results suggest that histone modification at the origin serves as a binary switch for controlling replication timing.
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发表时间: 2000-11-01
影响因子: 3.5
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