Long-range integration of transcriptional inputs is critical for gene expression, yet the mechanisms remain poorly understood. We investigated the molecular determinants that confer fidelity to expression of the heart identity gene even-skipped (eve). Targeted deletion of regions bound by the repressor Yan defined two novel enhancers that contribute repressive inputs to stabilize tissue-specific output from a third enhancer. Deletion of any individual enhancer reduced Yan occupancy at the other elements, impacting eve expression, cell fate specification, and cardiac function. These long-range interactions may be stabilized by three-dimensional chromatin contacts that we detected between the elements. Our work provides a new paradigm for chromatin-level integration of general repressive inputs with specific patterning information to achieve robust gene expression.
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 03 November 2013.
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