Regulation of CSF1 promoter by the SWI/SNF-like BAF complex.
The mammalian BAF complex regulates gene expression by modifying chromatin structure. In this report, we identify 80 genes activated and 2 genes repressed by the BAF complex in SW-13 cells. We find that prior binding of NFI/CTF to the NFI/CTF binding site in CSF1 promoter is required for the recruitment of the BAF complex and the BAF-dependent activation of the promoter. Furthermore, the activation of the CSF1 promoter requires Z-DNA-forming sequences that are converted to Z-DNA structure upon activation by the BAF complex. The BAF complex facilitates Z-DNA formation in a nucleosomal template in vitro. We propose a model in which the BAF complex promotes Z-DNA formation which, in turn, stabilizes the open chromatin structure at the CSF1 promoter.
Liu
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R
Laboratory of Molecular Immunology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.
Liu
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H
Chen
X
X
Kirby
M
M
Brown
P O
PO
Zhao
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K
D001483:Base Sequence; D022762:CCAAT-Enhancer-Binding Proteins / Q000378:metabolism; D002843:Chromatin / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D004265:DNA Helicases; D004278:DNA, Superhelical / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000737:chemistry / Q000378:metabolism*; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation; D020868:Gene Silencing; D006801:Humans; D046911:Macromolecular Substances; D016173:Macrophage Colony-Stimulating Factor / Q000235:genetics*; D008957:Models, Genetic; D008969:Molecular Sequence Data; D051839:NFI Transcription Factors; D009687:Nuclear Proteins / Q000235:genetics / Q000378:metabolism*; D009690:Nucleic Acid Conformation; D020411:Oligonucleotide Array Sequence Analysis; D010957:Plasmids / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D011401:Promoter Regions, Genetic / Q000235:genetics*; D011485:Protein Binding; D021122:Protein Subunits; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020218:Response Elements / Q000235:genetics; D013698:Templates, Genetic; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D015533:Transcriptional Activation; D014407:Tumor Cells, Cultured
D022762:CCAAT-Enhancer-Binding Proteins; C077305:CTF-1 transcription factor; D002843:Chromatin; D004278:DNA, Superhelical; D004268:DNA-Binding Proteins; D046911:Macromolecular Substances; D051839:NFI Transcription Factors; D009687:Nuclear Proteins; D021122:Protein Subunits; D012333:RNA, Messenger; C084011:SMARCA2 protein, human; D014157:Transcription Factors; D016173:Macrophage Colony-Stimulating Factor; C084108:SMARCA4 protein, human; D004265:DNA Helicases