Transcription-dependent dynamic supercoiling is a short-range genomic force.
Transcription-dependent dynamic supercoiling is a short-range genomic force.
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转录依赖性动态超串联是一种短距离基因组力。
DOI:
10.1038/nsmb.2517
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发表时间:
2013-03
影响因子:
16.8
通讯作者:
Levens, David
中科院分区:
文献类型:
--
作者:
Kouzine, Fedor;Gupta, Ashutosh;Baranello, Laura;Wojtowicz, Damian;Ben-Aissa, Khadija;Liu, Juhong;Przytycka, Teresa M.;Levens, David
Transcription has the capacity to modify mechanically DNA topology, DNA structure, and nucleosome arrangement. Resulting from ongoing transcription, these modifications in turn, may provide instant feedback to the transcription machinery. To substantiate the connection between transcription and DNA dynamics, we charted an ENCODE map of transcription-dependent dynamic supercoiling in human Burkitt lymphoma cells using psoralen photobinding to probe DNA topology in vivo. Dynamic supercoils spread ~1.5 kb upstream of the start sites of active genes. Low and high output promoters handle this torsional stress differently as shown using inhibitors of transcription and topoisomerases, and by chromatin immunoprecipation of RNA polymerase and topoisomerases I and II. Whereas lower outputs are managed adequately by topoisomerase I, high output promoters additionally require topoisomerase II. The genome-wide coupling between transcription and DNA topology emphasizes the importance of dynamic supercoiling for gene regulation.
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影响因子:
16.8
作者:
Kouzine, Fedor;Sanford, Suzanne;Levens, David
通讯作者:
Levens, David
影响因子:
5.6
作者:
Khobta, A;Ferri, F;Capranico, G
通讯作者:
Capranico, G
影响因子:
11.4
作者:
Durand-Dubief, Mickael;Persson, Jenna;Ekwall, Karl
通讯作者:
Ekwall, Karl
影响因子:
11.4
作者:
Cheung, Alan C. M.;Sainsbury, Sarah;Cramer, Patrick
通讯作者:
Cramer, Patrick
影响因子:
2.9
作者:
Kramer, PR;Sinden, RR
通讯作者:
Sinden, RR