The tail-module of yeast Mediator complex is required for telomere heterochromatin maintenance.
The tail-module of yeast Mediator complex is required for telomere heterochromatin maintenance.
复制标题
酵母介体复合物的尾部模块是端粒异染色质维持所必需的
DOI:
10.1093/nar/gkr757
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发表时间:
2012-01
影响因子:
14.9
通讯作者:
Zhou JQ
中科院分区:
文献类型:
--
作者:
Peng J;Zhou JQ
Eukaryotic chromosome ends have a DNA–protein complex structure termed telomere. Integrity of telomeres is essential for cell proliferation. Genome-wide screenings for telomere length maintenance genes identified several components of the transcriptional regulator, the Mediator complex. Our work provides evidence that Mediator is involved in telomere length regulation and telomere heterochromatin maintenance. Tail module of Mediator is required for telomere silencing by promoting or stabilizing Sir protein binding and spreading on telomeres. Mediator binds on telomere and may be a component of telomeric chromatin. Our study reveals a specific role of Mediator complex at the heterochromatic telomere and this function is specific to telomeres as it has no effect on the HMR locus.
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