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Citation
Chen, X., Hiller, M., Sancak, Y., Fuller, M.T. (2005). Tissue-specific TAFs counteract Polycomb to turn on terminal differentiation.  Science 310(5749): 869--872.
FlyBase ID
FBrf0190604
Publication Type
Research paper
Abstract
Polycomb transcriptional silencing machinery is implicated in the maintenance of precursor fates, but how this repression is reversed to allow cell differentiation is unknown. Here we show that testis-specific TAF (TBP-associated factor) homologs required for terminal differentiation of male germ cells may activate target gene expression in part by counteracting repression by Polycomb. Chromatin immunoprecipitation revealed that testis TAFs bind to target promoters, reduce Polycomb binding, and promote local accumulation of H3K4me3, a mark of Trithorax action. Testis TAFs also promoted relocalization of Polycomb Repression Complex 1 components to the nucleolus in spermatocytes, implicating subnuclear architecture in the regulation of terminal differentiation.
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Related Publication(s)
Review
Ringrose, 2006, BioEssays 28(4): 330--334 [FBrf0198747]
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    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Science
    Title
    Science
    Publication Year
    1895-
    ISBN/ISSN
    0036-8075
    Data From Reference
    Alleles (13)
    Gene Groups (1)
    Genes (17)
    Transgenic Constructs (3)