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EMBO J. 2005 Jul 6;24(13):2367-78. Epub 2005 May 26.

FOG-1 recruits the NuRD repressor complex to mediate transcriptional repression by GATA-1.

Author information

1
Division of Hematology, Children's Hospital of Philadelphia, PA 19104, USA.

Abstract

Transcription factor GATA-1 and its cofactor FOG-1 coordinate erythroid cell maturation by activating erythroid-specific genes and repressing genes associated with the undifferentiated state. Here we show that FOG-1 binds to the NuRD corepressor complex in vitro and in vivo. The interaction is mediated by a small conserved domain at the extreme N-terminus of FOG-1 that is necessary and sufficient for NuRD binding. This domain defines a novel repression module found in diverse transcriptional repressors. NuRD is present at GATA-1/FOG-1-repressed genes in erythroid cells in vivo. Point mutations near the N-terminus of FOG-1 that abrogate NuRD binding block gene repression by FOG-1. Finally, the ability of GATA-1 to repress transcription was impaired in erythroid cells expressing mutant forms of FOG-1 that are defective for NuRD binding. Together, these studies show that FOG-1 and likely other FOG-like proteins are corepressors that link GATA factors to histone deacetylation and nucleosome remodeling.

PMID:
15920470
PMCID:
PMC1173144
DOI:
10.1038/sj.emboj.7600703
[Indexed for MEDLINE]
Free PMC Article

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