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The role of insulator elements in defining domains of gene expression
Journal article   Peer reviewed

The role of insulator elements in defining domains of gene expression

Pamela K Geyer
Current opinion in genetics & development, Vol.7(2), pp.242-248
1997
DOI: 10.1016/S0959-437X(97)80134-7
PMID: 9115431

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Abstract

Insulators are naturally occurring DNA sequences that protect transgenes from genomic position effects, thereby establishing independent functional domains within the chromosome. Recent studies have focused on the identification of the cis and trans requirements for insulator activity. These experiments demonstrate that insulators contain multiple components that cooperate to confer their unique properties. Additionally, they suggest that the mechanism of insulation is related to that of enhancer function. Two models of insulator function can be considered: a domain boundary and a transcriptional decoy model.
SARs scaffold attachment regions BEAF boundary element associated factor HSs hypersensitive sites LCRs locus control regions MARs matrix attachment regions mod(mdg4) modifier of mdg4 su(Hw) suppressor of Hairy wing

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