Structural basis of nucleosome transcription mediated by Chd1 and FACT.
Structural basis of nucleosome transcription mediated by Chd1 and FACT.
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DOI:
10.1038/s41594-021-00578-6
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发表时间:
2021-04
影响因子:
16.8
通讯作者:
Cramer P
中科院分区:
文献类型:
--
作者:
Farnung L;Ochmann M;Engeholm M;Cramer P
Efficient transcription of RNA polymerase II (Pol II) through nucleosomes requires the help of various factors. Here we show biochemically that Pol II transcription through a nucleosome is facilitated by the chromatin remodeler Chd1 and the histone chaperone FACT when the elongation factors Spt4/5 and TFIIS are present. We report cryo-EM structures of transcribing Saccharomyces cerevisiae Pol II−Spt4/5−nucleosome complexes with bound Chd1 or FACT. In the first structure, Pol II transcription exposes the proximal histone H2A−H2B dimer that is bound by Spt5. Pol II has also released the inhibitory DNA-binding region of Chd1 that is poised to pump DNA toward Pol II. In the second structure, Pol II has generated a partially unraveled nucleosome that binds FACT, which excludes Chd1 and Spt5. These results suggest that Pol II progression through a nucleosome activates Chd1, enables FACT binding and eventually triggers transfer of FACT together with histones to upstream DNA. Structural and functional analyses of RNA polymerase II−nucleosome complexes reveal how the chromatin remodeler Chd1 and the histone chaperone FACT mediate Pol II transcription through a nucleosome.
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影响因子:
14.8
作者:
Kelley LA;Mezulis S;Yates CM;Wass MN;Sternberg MJ
通讯作者:
Sternberg MJ
影响因子:
64.5
作者:
Kim J;Guermah M;Roeder RG
通讯作者:
Roeder RG
DOI:
10.1126/science.1172926
发表时间:
2009-07-31
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Hodges C;Bintu L;Lubkowska L;Kashlev M;Bustamante C
通讯作者:
Bustamante C
影响因子:
7.7
作者:
Chen, Zhijie;Gabizon, Ronen;Bustamante, Carlos
通讯作者:
Bustamante, Carlos
影响因子:
16.6
作者:
Farnung, Lucas;Vos, Seychelle M.;Cramer, Patrick
通讯作者:
Cramer, Patrick