Identifier |
Residue |
Sequence |
Organism |
Cell Line |
SIGNOR-266966 |
|
|
Homo sapiens |
HEK-293 Cell |
pmid |
sentence |
21041482 |
We report here the identification of a mammalian complex containing the corepressor Sin3B, the histone deacetylase HDAC1, Mrg15, and the PHD finger-containing Pf1 and show that this complex plays important roles in regulation of transcription. Sin3B, Pf1, Mrg15, and HDAC1 associate within a stable complex that binds H3K4me3/H3K36me3-enriched nucleosomes. We identify mammalian Pf1, a PHD finger protein, as a homologue of Rco1, and show that all four components, Sin3B, HDAC1, Mrg15, and Pf1, can form a stable complex, which is recruited downstream of the transcriptional start site through complex interactions with histones. these results indicate that the Pf1/Sin3B-containing complex is recruited at discrete sites within actively transcribed loci, likely through its interaction with H3K4me3/H3K36me3-enriched chromatin. our data suggest that the tethering of HDAC1, as part of this complex, to these loci promotes histone deacetylation within the coding region and prevents uncontrolled RNAP II progression at transcribed loci. |
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