For genomes to stay in shape, insulators must be up to PAR.

Wijchers, Patrick J; de Laat, Wouter · Cell · 2013

basic_science · Level V

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Abstract

Insulators drive nuclear organization by blocking or facilitating interactions between DNA regulatory elements. Ong et al. show that poly(ADP-ribosyl)ation of insulator binding proteins modulates their ability to physically interact with distant regulatory elements, implicating posttranslational modifications of nonhistone proteins in genome architecture.

Medical subject headings