ALBA protein complex reads genic R-loops to maintain genome stability in Arabidopsis
ALBA protein complex reads genic R-loops to maintain genome stability in Arabidopsis
复制标题
ALBA 蛋白复合物读取基因 R 环以维持拟南芥基因组稳定性
DOI:
10.1126/sciadv.aav9040
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发表时间:
2019-05
期刊:
影响因子:
13.6
通讯作者:
Qian Weiqiang
中科院分区:
文献类型:
--
作者:
Yuan Wei;Zhou Jincong;Tong Jinjin;Zhuo Wanqing;Wang Lishuan;Li Yan;Sun Qianwen;Qian Weiqiang
AtALBA1 and AtALBA2 are genic R-loop readers. The R-loop, composed of a DNA-RNA hybrid and the displaced single-stranded DNA, regulates diverse cellular processes. However, how cellular R-loops are recognized remains poorly understood. Here, we report the discovery of the evolutionally conserved ALBA proteins (AtALBA1 and AtALBA2) functioning as the genic R-loop readers in Arabidopsis. While AtALBA1 binds to the DNA-RNA hybrid, AtALBA2 associates with single-stranded DNA in the R-loops in vitro. In vivo, these two proteins interact and colocalize in the nucleus, where they preferentially bind to genic regions with active epigenetic marks in an R-loop–dependent manner. Depletion of AtALBA1 or AtALBA2 results in hypersensitivity of plants to DNA damaging agents. The formation of DNA breaks in alba mutants originates from unprotected R-loops. Our results reveal that the AtALBA1 and AtALBA2 protein complex is the genic R-loop reader crucial for genome stability in Arabidopsis.
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影响因子:
3.7
作者:
Takata H;Hanafusa T;Mori T;Shimura M;Iida Y;Ishikawa K;Yoshikawa K;Yoshikawa Y;Maeshima K
通讯作者:
Maeshima K
影响因子:
16
作者:
Taneja N;Zofall M;Balachandran V;Thillainadesan G;Sugiyama T;Wheeler D;Zhou M;Grewal SI
通讯作者:
Grewal SI
影响因子:
16
作者:
Wahba, Lamia;Amon, Jeremy D.;Koshland, Douglas;Vuica-Ross, Milena
通讯作者:
Vuica-Ross, Milena
DOI:
10.1016/j.tig.2016.10.002
发表时间:
2016-12
期刊:
Trends in genetics : TIG
影响因子:
--
作者:
Chédin F
通讯作者:
Chédin F
DOI:
10.1126/science.aan6490
发表时间:
2018-01-05
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Kabeche L;Nguyen HD;Buisson R;Zou L
通讯作者:
Zou L