Transcription-induced supercoiling explains formation of self-interacting chromatin domains in S. pombe.
Transcription-induced supercoiling explains formation of self-interacting chromatin domains in S. pombe.
复制标题
DOI:
10.1093/nar/gkx716
复制
发表时间:
2017-09-29
影响因子:
14.9
通讯作者:
Stasiak A
中科院分区:
文献类型:
--
作者:
Benedetti F;Racko D;Dorier J;Burnier Y;Stasiak A
The question of how self-interacting chromatin domains in interphase chromosomes are structured and generated dominates current discussions on eukaryotic chromosomes. Numerical simulations using standard polymer models have been helpful in testing the validity of various models of chromosome organization. Experimental contact maps can be compared with simulated contact maps and thus verify how good is the model. With increasing resolution of experimental contact maps, it became apparent though that active processes need to be introduced into models to recapitulate the experimental data. Since transcribing RNA polymerases are very strong molecular motors that induce axial rotation of transcribed DNA, we present here models that include such rotational motors. We also include into our models swivels and sites for intersegmental passages that account for action of DNA topoisomerases releasing torsional stress. Using these elements in our models, we show that transcription-induced supercoiling generated in the regions with divergent-transcription and supercoiling relaxation occurring between these regions are sufficient to explain formation of self-interacting chromatin domains in chromosomes of fission yeast (S. pombe).
登录
查看更多内容
影响因子:
16.6
作者:
Husain A;Begum NA;Taniguchi T;Taniguchi H;Kobayashi M;Honjo T
通讯作者:
Honjo T
影响因子:
64.5
作者:
Dekker J;Mirny L
通讯作者:
Mirny L
影响因子:
16.8
作者:
Kouzine, Fedor;Gupta, Ashutosh;Baranello, Laura;Wojtowicz, Damian;Ben-Aissa, Khadija;Liu, Juhong;Przytycka, Teresa M.;Levens, David
通讯作者:
Levens, David
影响因子:
16.8
作者:
Kouzine, Fedor;Sanford, Suzanne;Levens, David
通讯作者:
Levens, David
影响因子:
10.5
作者:
Crisona, NJ;Strick, TR;Cozzarelli, NR
通讯作者:
Cozzarelli, NR