Genomic mapping of Suppressor of Hairy-wing binding sites in Drosophila.

Background Insulator elements are proposed to play a key role in the organization of the regulatory architecture of the genome. In Drosophila, one of the best studied is the gypsy retrotransposon insulator, which is bound by the Suppressor of Hairy-wing (Su [Hw]) transcriptional regulator. Immunolocalization studies suggest that there are several hundred Su(Hw) sites in the genome, but few of these endogenous Su(Hw) binding sites have been identified.