The DNA demethylase ROS1 targets genomic regions with distinct chromatin modifications.
The DNA demethylase ROS1 targets genomic regions with distinct chromatin modifications.
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DOI:
10.1038/nplants.2016.169
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发表时间:
2016-10-31
期刊:
影响因子:
18
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中科院分区:
文献类型:
--
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The Arabidopsis ROS1/DEMETER family of 5mC DNA glycosylases are the first genetically characterized DNA demethylases in eukaryotes. However, the features of ROS1 targeted genomic loci are not well-understood. In this study, we characterized ROS1 target loci in Arabidopsis Col-0 and C24 ecotypes. We found that ROS1 preferentially targets transposable elements (TEs) and intergenic regions. Compared to most TEs, ROS1-targeted TEs are closer to protein coding genes, suggesting that ROS1 may prevent DNA methylation spreading from TEs to nearby genes. ROS1-targeted TEs are specifically enriched for H3K18Ac and H3K27me3, and depleted of H3K27me and H3K9me2. Importantly, we identified thousands of previously unknown RNA-directed DNA methylation (RdDM) targets upon depletion of ROS1, suggesting that ROS1 strongly antagonizes RdDM at these loci. In addition, we show that ROS1 also antagonizes RdDM-independent DNA methylation at some loci. Our results provide important insights into the genome-wide targets of ROS1 and the crosstalk between DNA methylation and ROS1-mediated active DNA demethylation.
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影响因子:
4.5
作者:
Huang CF;Miki D;Tang K;Zhou HR;Zheng Z;Chen W;Ma ZY;Yang L;Zhang H;Liu R;He XJ;Zhu JK
通讯作者:
Zhu JK
影响因子:
4.5
作者:
Li Y;Córdoba-Cañero D;Qian W;Zhu X;Tang K;Zhang H;Ariza RR;Roldán-Arjona T;Zhu JK
通讯作者:
Zhu JK
影响因子:
4.5
作者:
Budworth H;Harris FR;Williams P;Lee DY;Holt A;Pahnke J;Szczesny B;Acevedo-Torres K;Ayala-Peña S;McMurray CT
通讯作者:
McMurray CT
影响因子:
16
作者:
Martínez-Macías MI;Qian W;Miki D;Pontes O;Liu Y;Tang K;Liu R;Morales-Ruiz T;Ariza RR;Roldán-Arjona T;Zhu JK
通讯作者:
Zhu JK
DOI:
10.1126/science.1224839
发表时间:
2012-09-14
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Ibarra CA;Feng X;Schoft VK;Hsieh TF;Uzawa R;Rodrigues JA;Zemach A;Chumak N;Machlicova A;Nishimura T;Rojas D;Fischer RL;Tamaru H;Zilberman D
通讯作者:
Zilberman D