Abstract:
BACKGROUND:Histone modification is an epigenetic mechanism that influences gene regulation in eukaryotes. In particular, histone modifications in CpG islands (CGIs) are associated with different chromatin states and with transcription activity. Changes in gene expression play a crucial role in adaptation and evolution. RESULTS:In this paper, we have studied, using a computational biology approach, the relationship between histone modifications in CGIs and selective pressure in Homo sapiens. We considered three histone modifications: histone H3 lysine 4 trimethylation (H3K4me3), histone H3 lysine 27 acetylation (H3K27ac) and histone H3 lysine 36 trimethylation (H3K36me3), and we used the publicly available genomic-scale histone modification data of thirteen human cell lines. To define regions under selective pressure, we used three distinct signatures that mark selective events from different evolutionary periods. We found that CGIs under selective pressure showed significant enrichments for histone modifications. CONCLUSION:Our result suggests that, CGIs that have undergone selective events are characterized by epigenetic signatures, in particular, histone modifications that are distinct from CGIs with no evidence of selection.
journal_name
BMC Evol Bioljournal_title
BMC evolutionary biologyauthors
Akhtar MM,Scala G,Cocozza S,Miele G,Monticelli Adoi
10.1186/1471-2148-13-145subject
Has Abstractpub_date
2013-07-10 00:00:00pages
145issn
1471-2148pii
1471-2148-13-145journal_volume
13pub_type
杂志文章abstract:BACKGROUND:The past decade has witnessed remarkable progress towards resolution of the Tree of Life. However, despite the increased use of genomic scale datasets, some phylogenetic relationships remain difficult to resolve. Here we employ anchored phylogenomics to capture 107 nuclear loci in 29 species of acanthomorph ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2018-02-05 00:00:00
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pub_type: 杂志文章
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更新日期:2013-05-31 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章,meta分析
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pub_type: 杂志文章
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pub_type: 杂志文章
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