ArticleNucleic acids research1996
Phosphorylation/dephosphorylation of the repressor MDBP-2-H1 selectively affects the level of transcription from a methylated promoter in vitro.
Article in Nucleic acids research, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 12 citations in OpenAlex.
- Unphosphorylated H1 is enriched in a specific region of the promoter when CDC2 is down-regulated during starvation.Molecular and cellular biology · 2007Article
- Histone H1 represses estrogen receptor alpha transcriptional activity by selectively inhibiting receptor-mediated transcription initiation.Molecular and cellular biology · 2002Article
- Methylation-mediated transcriptional silencing in euchromatin by methyl-CpG binding protein MBD1 isoforms.Molecular and cellular biology · 1999Article
- The methylated DNA binding protein-2-H1 (MDBP-2-H1) consists of histone H1 subtypes which are truncated at the C-terminus.Nucleic acids research · 1997Article
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2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
We have previously shown that in vivo estradiol-dependent dephosphorylation of MDBP-2-H1 (a member of the histone H1 family) correlates with the loss of in vitro preferential binding to methylated DNA. To study the effects of the phosphorylation/dephosphorylation of MDBP-2-H1 on the expression of the avian vitellogenin II gene, we optimised an in vitro transcription system using HeLa nuclear extracts. We show that in the absence of the phosphorylated form of MDBP-2-H1 from rooster, methylation of the vitellogenin II promoter does not affect the transcription. Addition of purified MDBP-2-H1 from rooster to the in vitro transcription system inhibits transcription more efficiently from a methylated than an unmethylated DNA template. Dephosphorylation of rooster MDBP-2-H1 by phosphatase treatment or estradiol treatment of rooster lead to the loss of inhibitory activity of the protein when added to the in vitro transcription assays. These findings indicate that the phosphorylation of MDBP-2-H1 is essential for the repression of the transcription. Taken together these results establish the relationship between the dephosphorylation of MDBP-2-H1 caused by estradiol, the down regulation of its binding activity to methylated DNA and the derepression of vitellogenin II transcription.
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