Elongating RNA Polymerase II Is Disassembled through Specific Degradation of Its Largest but Not Other Subunits in Response to DNA Damage in Vivo*
Elongating RNA Polymerase II Is Disassembled through Specific Degradation of Its Largest but Not Other Subunits in Response to DNA Damage in Vivo*
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响应体内 DNA 损伤,延伸 RNA 聚合酶 II 通过其最大亚基(而非其他亚基)的特异性降解而被分解*
DOI:
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发表时间:
2008
影响因子:
4.8
通讯作者:
S. Bhaumik
中科院分区:
文献类型:
--
作者:
Shivani Malik;S. Bagla;Priyasri Chaurasia;Zhenhong Duan;S. Bhaumik
Although previous biochemical studies have demonstrated global degradation of the largest subunit, Rpb1p, of RNA polymerase II in response to DNA damage, it is still not clear whether the initiating or elongating form of Rpb1p is targeted for degradation in vivo. Further, whether other components of RNA polymerase II are degraded in response to DNA damage remains unknown. Here, we show that the Rpb1p subunit of the elongating, but not initiating, form of RNA polymerase II is degraded at the active genes in response to 4-nitroquinoline-1-oxide-induced DNA damage in Saccharomyces cerevisiae. However, other subunits of RNA polymerase II are not degraded in response to DNA damage. Further, we show that Rpb1p is essential for RNA polymerase II assembly at the active gene, and thus, the degradation of Rpb1p following DNA damage disassembles elongating RNA polymerase II. Taken together, our data demonstrate that Rpb1p but not other subunits of elongating RNA polymerase II is specifically degraded in response to DNA damage, and such a degradation of Rpb1p is critical for the disassembly of elongating RNA polymerase II at the DNA lesion in vivo.
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DOI:
10.1016/s0921-8777(01)00097-0
发表时间:
2001-09-04
期刊:
MUTATION RESEARCH-DNA REPAIR
影响因子:
--
作者:
Luo, ZH;Zheng, JH;Bregman, DB
通讯作者:
Bregman, DB
DOI:
10.1101/sqb.2000.65.561
发表时间:
2000
期刊:
Cold Spring Harbor symposia on quantitative biology
影响因子:
--
作者:
Leadon,SA
通讯作者:
Leadon,SA
DOI:
10.1073/pnas.89.22.10696
发表时间:
1992
影响因子:
11.1
作者:
Sweder,KS;Hanawalt,PC
通讯作者:
Hanawalt,PC
DOI:
10.1016/s0921-8777(00)00071-9
发表时间:
2001-02-25
期刊:
MUTATION RESEARCH-DNA REPAIR
影响因子:
--
作者:
Hanawalt, PC
通讯作者:
Hanawalt, PC
影响因子:
56.9
作者:
HARTWELL, LH;WEINERT, TA
通讯作者:
WEINERT, TA