Abstract:
:The solubility of adult beta-globin chromatin (beta A chromatin) from immature chicken red blood cells can be controlled by the presence or absence of n-butyrate in a cell incubation medium. In the absence of n-butyrate, only a small percentage (approximately 4%) of the total beta A chromatin is in a soluble chromatin fraction following micrococcal nuclease digestion and centrifugation. This percentage increases to approximately 40-45% of the beta A chromatin if cells are incubated 1 hour in the presence of 10 mM sodium n-butyrate. The highest yield and enrichment of solubilized beta A chromatin is attained when 1-4% of the DNA is rendered acid soluble, and in buffers containing 1.5 - 5 mM MgCl2. The soluble beta A nucleohistone is nucleosome oligomer size (contains DNA 250-600 bases in length) and can be separated from soluble, transcriptionally inert mononucleosomes by agarose A-5m exclusion chromatography. The enhanced solubility appears to be specific for transcriptionally active chromatin. Whereas 40-45% of the beta A chromatin is recovered in the supernatant fraction from n-butyrate incubated immature erythrocytes, nucleohistone containing ovalbumin DNA sequences remains insoluble.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Ferenz CR,Nelson DAdoi
10.1093/nar/13.6.1977subject
Has Abstractpub_date
1985-03-25 00:00:00pages
1977-95issue
6eissn
0305-1048issn
1362-4962journal_volume
13pub_type
杂志文章abstract::Functional crosstalk between histone modifications and chromatin remodeling has emerged as a key regulatory mode of transcriptional control during cell fate decisions, but the underlying mechanisms are not fully understood. Here we discover an HRP2-DPF3a-BAF epigenetic pathway that coordinates methylated histone H3 ly...
journal_title:Nucleic acids research
pub_type: 杂志文章
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journal_title:Nucleic acids research
pub_type: 杂志文章
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更新日期:1985-03-11 00:00:00
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journal_title:Nucleic acids research
pub_type: 杂志文章
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journal_title:Nucleic acids research
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更新日期:1984-12-21 00:00:00
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journal_title:Nucleic acids research
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journal_title:Nucleic acids research
pub_type: 杂志文章
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更新日期:1977-02-01 00:00:00
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journal_title:Nucleic acids research
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journal_title:Nucleic acids research
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