Cdc14b regulates mammalian RNA polymerase II and represses cell cycle transcription.
Cdc14b regulates mammalian RNA polymerase II and represses cell cycle transcription.
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DOI:
10.1038/srep00189
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发表时间:
2011
影响因子:
4.6
通讯作者:
Malumbres, Marcos
中科院分区:
文献类型:
--
作者:
Guillamot, Maria;Manchado, Eusebio;Chiesa, Massimo;Gomez-Lopez, Gonzalo;Pisano, David G.;Sacristan, Maria P.;Malumbres, Marcos
Cdc14 is an essential phosphatase in yeast but its role in the mammalian cell cycle remains obscure. We report here that Cdc14b-knockout cells display unscheduled induction of multiple cell cycle regulators resulting in early entry into DNA replication and mitosis from quiescence. Cdc14b dephosphorylates Ser5 at the C-terminal domain (CTD) of RNA polymerase II, a major substrate of cyclin-dependent kinases. Lack of Cdc14b results in increased CTD-Ser5 phosphorylation, epigenetic modifications that mark active chromatin, and transcriptional induction of cell cycle regulators. These data suggest a function for mammalian Cdc14 phosphatases in the control of transcription during the cell cycle.
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