...
首页> 外文期刊>Molecular and Cellular Biology >Rct1, a Nuclear RNA Recognition Motif-Containing Cyclophilin, Regulates Phosphorylation of the RNA Polymerase II C-Terminal Domain
【24h】

Rct1, a Nuclear RNA Recognition Motif-Containing Cyclophilin, Regulates Phosphorylation of the RNA Polymerase II C-Terminal Domain

机译:Rct1,核RNA识别母题的亲环蛋白,调节RNA聚合酶II C末端域的磷酸化。

获取原文
           

摘要

Phosphorylation of the C-terminal domain (CTD) of RNA polymerase II (RNAP II) is a dynamic process that regulates transcription and coordinates it with pre-mRNA processing. We show here that Rct1, a nuclear multidomain cyclophilin from Schizosaccharomyces pombe, is encoded by an essential gene that interacts with the CTD and regulates its phosphorylation in vivo. Downregulation of Rct1 levels results in increased phosphorylation of the CTD at both Ser2 and Ser5 and in a commensurate decrease in RNAP II transcription. In contrast, overexpression of Rct1 decreases phosphorylation on both sites. The close association of Rct1 with transcriptionally active chromatin suggests a role in regulation of RNAP II transcriptional activity. These data, together with the pleiotropic phenotype upon Rct1 deregulation, suggest that this multidomain cyclophilin is an important player in maintaining the correct phosphorylation code of the CTD and thereby regulating CTD function.
机译:RNA聚合酶II(RNAP II)的C端结构域(CTD)的磷酸化是一个动态过程,可调节转录并将其与mRNA之前的加工进行协调。我们在这里显示Rct1,一种来自 Schizosaccharomyces pombe 的核多结构域亲环蛋白,由与CTD相互作用并在体内调节其磷酸化的必需基因编码。 Rct1水平的下调导致在Ser2和Ser5处CTD的磷酸化增加,并在RNAP II转录中相应减少。相反,Rct1的过表达减少了两个位点的磷酸化。 Rct1与转录活性染色质的密切联系表明在调节RNAP II转录活性中的作用。这些数据,以及Rct1解除调控后的多效性表型,表明该多结构域亲环蛋白是维持CTD正确的磷酸化编码从而调节CTD功能的重要参与者。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号