SPT5 stabilization of promoter-proximal RNA polymerase II.

SPT5 stabilization of promoter-proximal RNA polymerase II.
复制标题

DOI:
10.1016/j.molcel.2021.08.006
复制
发表时间:
2021-11-04
期刊:
影响因子:
16
通讯作者:
Shilatifard A
Shilatifard A
中科院分区:
生物学1区
文献类型:
--
作者:
Aoi Y;Takahashi YH;Shah AP;Iwanaszko M;Rendleman EJ;Khan NH;Cho BK;Goo YA;Ganesan S;Kelleher NL;Shilatifard A

文献摘要

参考文献

被引文献

相似文献

体外研究表明,由SPT4和SPT5组成的DSIF复合物调控RNA聚合酶II (Pol II)催化的转录延伸阶段。SPT5的确切细胞功能尚不清楚,因为传统的SPT5基因耗尽策略导致细胞活力丧失。使用急性诱导蛋白耗尽策略来规避这一问题,我们报道SPT5丢失触发核心Pol II亚基RPB1的泛素化和蛋白酶体降解,我们表明这一过程从酵母到人类细胞都是进化保守的。RPB1的降解需要E3连接酶Cullin 3、展开酶VCP/p97和一种新型的CDK9激酶复合物。我们的研究表明,SPT5在启动子-近端区域特异性地稳定了Pol II,允许Pol II从启动子释放到基因体中,这为SPT5在保护基因准确表达方面的细胞功能提供了机制见解。Aoi等人发现,保守的转录延伸因子SPT5在酵母和人类细胞中稳定RNA聚合酶II (Pol II)。SPT5的丢失通过CUL3、VCP和CDK9触发Pol II亚基的降解。稳定Pol II可能是SPT5保障基因准确表达的主要功能。
Based on in vitro studies, it has been demonstrated that the DSIF complex, comprised of SPT4 and SPT5, regulates the elongation stage of transcription catalyzed by RNA polymerase II (Pol II). The precise cellular function of SPT5 is not clear since conventional gene depletion strategies for SPT5 result in loss of cellular viability. Using an acute inducible protein depletion strategy to circumvent this issue, we report that SPT5 loss triggers the ubiquitination and proteasomal degradation of the core Pol II subunit RPB1, a process which we show to be evolutionarily conserved from yeast to human cells. RPB1 degradation requires the E3 ligase Cullin 3, the unfoldase VCP/p97 and a novel form of CDK9 kinase complex. Our study demonstrates that SPT5 stabilizes Pol II specifically at promoter-proximal regions, permitting Pol II release from promoters into gene bodies providing mechanistic insight into the cellular function of SPT5 in safeguarding accurate gene expression. Aoi et al find that the conserved transcription elongation factor SPT5 stabilizes RNA polymerase II (Pol II) in yeast and human cells. SPT5 loss triggers degradation of a Pol II subunit through CUL3, VCP, and CDK9. Stabilizing Pol II may be a SPT5’s primary function to safeguard accurate gene expression.
DOI: 10.1016/j.str.2012.08.011
发表时间: 2012-10-10
期刊: STRUCTURE
影响因子: 5.7
作者:
Baumli, Sonja;Hole, Alison J.;Wang, Lan-Zhen;Noble, Martin E. M.;Endicott, Jane A.
通讯作者: Endicott, Jane A.
DOI: 10.1016/j.molcel.2007.10.008
发表时间: 2007-11-09
期刊: MOLECULAR CELL
影响因子: 16
作者:
Anindya, Roy;Ayguen, Ozan;Svejstrup, Jesper Q.
通讯作者: Svejstrup, Jesper Q.
DOI: 10.1073/pnas.1216880109
发表时间: 2012-12-04
影响因子: 11.1
作者:
Holland, Andrew J.;Fachinetti, Daniele;Cleveland, Don W.
通讯作者: Cleveland, Don W.
DOI: 10.1038/s41596-019-0262-3
发表时间: 2020-01-08
期刊: NATURE PROTOCOLS
影响因子: 14.8
作者:
Gregersen, Lea H.;Mitter, Richard;Svejstrup, Jesper Q.
通讯作者: Svejstrup, Jesper Q.
DOI: 10.1016/j.molcel.2020.08.016
发表时间: 2020-10-15
期刊: Molecular cell
影响因子: 16
作者:
Huang KL;Jee D;Stein CB;Elrod ND;Henriques T;Mascibroda LG;Baillat D;Russell WK;Adelman K;Wagner EJ
通讯作者: Wagner EJ