Systematic protein location mapping reveals five principal chromatin types in Drosophila cells.
Systematic protein location mapping reveals five principal chromatin types in Drosophila cells.
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DOI:
10.1016/j.cell.2010.09.009
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发表时间:
2010-10-15
期刊:
影响因子:
64.5
通讯作者:
van Steensel B
中科院分区:
文献类型:
--
作者:
Filion GJ;van Bemmel JG;Braunschweig U;Talhout W;Kind J;Ward LD;Brugman W;de Castro IJ;Kerkhoven RM;Bussemaker HJ;van Steensel B
Chromatin is important for the regulation of transcription and other functions, yet the diversity of chromatin composition and the distribution along chromosomes is still poorly characterized. By integrative analysis of genome-wide binding maps of 53 broadly selected chromatin components in Drosophila cells, we show that the genome is segmented into five principal chromatin types that are defined by unique, yet overlapping combinations of proteins, and form domains that can extend over >100 kb. We identify a repressive chromatin type that covers about half of the genome and lacks classic heterochromatin markers. Furthermore, transcriptionally active euchromatin consists of two types that differ in molecular organization and H3K36 methylation, and regulate distinct classes of genes. Finally, we provide evidence that the different chromatin types help to target DNA-binding factors to specific genomic regions. These results provide a global view of chromatin diversity and domain organization in a metazoan cell.
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