Factors binding a non-classical Cis-element prevent heterochromatin effects on locus control region activity.

Abstract excerpt

A locus control region (LCR) is a cis-acting gene-regulatory element capable of transferring the expression characteristics of its gene locus of origin to a linked transgene. Furthermore, it can do this independently of the site of integration in the genome of transgenic mice. Although most LCRs contain subelements with classical transcriptional enhancer function, key aspects of LCR activity are supported by...

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