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EMBO Rep. 2001 Dec;2(12):1089-94. Epub 2001 Nov 21.

Tramtrack69 interacts with the dMi-2 subunit of the Drosophila NuRD chromatin remodelling complex.

Author information

1
MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK.

Abstract

dMi-2, the ATPase subunit of the Drosophila nucleosome remodelling and histone deacetylation (dNuRD) complex, was identified in a two-hybrid screen as an interacting partner of the transcriptional repressor, Tramtrack69 (Ttk69). A short region of Ttk69 is sufficient to mediate this interaction. Ttk69, but not the Ttk88 isoform, co-purifies with the dNuRD complex isolated from embryo extracts. dMi-2 and Ttk69 co-immunoprecipitate from embryonic extracts, indicating that they can associate in vivo. Both dMi-2 and Ttk69 co-localize at a number of discrete sites on polytene chromosomes, showing that they bind common target loci. We also demonstrate that dMi-2 and Ttk interact genetically, indicating a functional interaction in vivo. We propose that Ttk69 represses some target genes by remodelling chromatin structure through the recruitment of the dNuRD complex.

PMID:
11743021
PMCID:
PMC1084170
DOI:
10.1093/embo-reports/kve252
[Indexed for MEDLINE]
Free PMC Article

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