Concerted action of the PHD, chromo and motor domains regulates the human chromatin remodelling ATPase CHD4.

ABSTRACT: CHD4, the core subunit of the Nucleosome Remodelling and Deacetylase (NuRD) complex, is a chromatin remodelling ATPase that, in addition to a helicase domain, harbors tandem plant homeo finger and chromo domains. By using a panel of domain constructs we dissect their roles and demonstrate that DNA binding, histone binding and ATPase activities are allosterically regulated. Molecular shape reconstruction from small-angle X-ray scattering reveals extensive domain-domain interactions, which provide a structural explanation for the regulation of CHD4 activities by intramolecular domain communication. Our results demonstrate functional interdependency between domains within a chromatin remodeller.

SUBMITTER: Morra R 

PROVIDER: S-EPMC3476528 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature