The Drosophila methyl-DNA binding protein MBD2/3 interacts with the NuRD complex via p55 and MI-2.

Autor: Marhold, Joachim, Brehm, Alexander, Kramer, Katja
Předmět:
Zdroj: BMC Molecular Biology; 2004, Vol. 5, p1-10, 10p, 1 Chart, 4 Graphs
Abstrakt: Background: Methyl-DNA binding proteins help to translate epigenetic information encoded by DNA methylation into covalent histone modifications. MBD2/3 is the only candidate gene in the Drosophila genome with extended homologies to mammalian MBD2 and MBD3 proteins, which represent a co-repressor and an integral component of the Nucleosome Remodelling and Deacetylase (NuRD) complex, respectively. An association of Drosophila MBD2/3 with the Drosophila NuRD complex has been suggested previously. We have now analyzed the molecular interactions between MBD2/3 and the NuRD complex in greater detail. Results: The two MBD2/3 isoforms precisely cofractionated with NuRD proteins during gel filtration of extracts derived from early and late embryos. In addition, we demonstrate that MBD2/ 3 forms multimers, and engages in specific interactions with the p55 and MI-2 subunits of the Drosophila NuRD complex. Conclusion: Our data provide novel insights into the association between Drosophila MBD2/3 and NuRD proteins. Additionally, this work provides a first analysis of the architecture of the Drosophila NuRD complex. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index