Drosophila H1 regulates the genetic activity of heterochromatin by recruitment of Su(var)3-9.
Drosophila H1 regulates the genetic activity of heterochromatin by recruitment of Su(var)3-9.
复制标题
DOI:
10.1126/science.1234654
复制
发表时间:
2013-04-05
期刊:
影响因子:
--
通讯作者:
Skoultchi AI
中科院分区:
文献类型:
--
作者:
Lu X;Wontakal SN;Kavi H;Kim BJ;Guzzardo PM;Emelyanov AV;Xu N;Hannon GJ;Zavadil J;Fyodorov DV;Skoultchi AI
Eukaryotic genomes harbor transposable elements and other repetitive sequences that must be silenced. Small RNA interference pathways play a major role in their repression. Here, we reveal another mechanism for silencing these sequences in Drosophila. Depleting the linker histone H1 in vivo leads to strong activation of these elements. H1-mediated silencing occurs in combination with the heterochromatin-specific histone H3 lysine 9 methyltransferase Su(var)3-9. H1 physically interacts with Su(var)3-9 and recruits it to chromatin in vitro, which promotes H3 methylation. We propose that H1 plays a key role in silencing by tethering Su(var)3-9 to heterochromatin. The tethering function of H1 adds to its established role as a regulator of chromatin compaction and accessibility.
登录
查看更多内容
影响因子:
16
作者:
Nielsen, AL;Oulad-Abdelghani, M;Losson, R
通讯作者:
Losson, R
影响因子:
10.5
作者:
Lu, Xingwu;Wontakal, Sandeep N.;Skoultchi, Arthur I.
通讯作者:
Skoultchi, Arthur I.
影响因子:
64.5
作者:
WEINTRAUB, H
通讯作者:
WEINTRAUB, H
影响因子:
14.9
作者:
Vujatovic O;Zaragoza K;Vaquero A;Reina O;Bernués J;Azorín F
通讯作者:
Azorín F
影响因子:
9.2
作者:
Elgin, SCR;Grewal, SIS
通讯作者:
Grewal, SIS