Differential association of Arabidopsis telomeres and centromeres with Histone H3 variants

被引:20
作者
Vaquero-Sedas, Maria I. [1 ]
Vega-Palas, Miguel A. [1 ]
机构
[1] Univ Seville, CSIC, Inst Bioquim Vegetal & Fotosintesis, IBVF CSIC US, Seville 41092, Spain
来源
SCIENTIFIC REPORTS | 2013年 / 3卷
关键词
THALIANA; CHROMATIN; REPEATS; ATRX;
D O I
10.1038/srep01202
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Two different groups, using ChIP-seq data, have recently published the genome-wide distribution of histones H3.1 and H3.3 in Arabidopsis thaliana. In one report, Stroud and colleagues determined that, whereas H3.1 was enriched in repetitive pericentromeric and silent chromatin, H3.3 was enriched in transcriptionally active regions. This work was performed using seedlings, which contained dividing and non-dividing cells. In a second report, Wollmann and colleagues found similar results analyzing dividing or non-dividing tissue. None of these reports addressed the analysis of telomeres or centromeres. Our group has recently described an experimental approach that allows the study of the epigenetic status of some Arabidopsis repetitive sequences by analyzing ChIP-seq data. By using this approach and the data generated by Stroud, Wollmann and colleagues, we found that telomeres are enriched in H3.3 with regard to the centromeric 178 bp repeats, whereas the centromeric repeats are enriched in H3.1 with regard to telomeres.
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页数:3
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