Short-range repression permits multiple enhancers to function autonomously within a complex promoter.

@article{citeulike:2444408, abstract = {Transcriptional repressors play a key role in establishing localized patterns of gene expression in the early Drosophila embryo. Several different modes of repression have been implicated in previous studies, including competition and direct interference with the transcription complex. Here, we present evidence for "quenching," whereby activators and repressors co-occupy neighboring sites in a target promoter, but the repressor blocks the ability of the activator to contact the transcription complex. This study centers on a zinc finger repressor, snail (sna), which represses the expression of neuroectodermal regulatory genes in the presumptive mesoderm. We show that sna can mediate efficient repression when bound 50-100 bp from upstream activator sites. Repression does not depend on proximity of sna-binding sites to the transcription initiation site. sna is not a dedicated repressor but, instead, appears to block disparate activators. We discuss the importance of quenching as a means of permitting separate enhancers to function autonomously within a complex promoter. 10.1101/gad.8.15.1829}, author = {Gray, S. and Szymanski, P. and Levine, M. }, citeulike-article-id = {2444408}, doi = {10.1101/gad.8.15.1829}, journal = {Genes Dev.}, keywords = {dna-protein\_interaction, drosophila, even-skipped\_enhancer, pattern\_formation, transcriptional\_regulation}, month = {August}, number = {15}, pages = {1829--1838}, posted-at = {2008-02-28 17:42:19}, priority = {2}, title = {Short-range repression permits multiple enhancers to function autonomously within a complex promoter.}, url = {http://dx.doi.org/10.1101/gad.8.15.1829}, volume = {8}, year = {1994} }

TY - JOUR ID - citeulike:2444408 L3 - citeulike-article-id:2444408 TI - Short-range repression permits multiple enhancers to function autonomously within a complex promoter. JF - Genes Dev. VL - 8 IS - 15 SP - 1829 EP - 1838 N2 - Transcriptional repressors play a key role in establishing localized patterns of gene expression in the early Drosophila embryo. Several different modes of repression have been implicated in previous studies, including competition and direct interference with the transcription complex. Here, we present evidence for "quenching," whereby activators and repressors co-occupy neighboring sites in a target promoter, but the repressor blocks the ability of the activator to contact the transcription complex. This study centers on a zinc finger repressor, snail (sna), which represses the expression of neuroectodermal regulatory genes in the presumptive mesoderm. We show that sna can mediate efficient repression when bound 50-100 bp from upstream activator sites. Repression does not depend on proximity of sna-binding sites to the transcription initiation site. sna is not a dedicated repressor but, instead, appears to block disparate activators. We discuss the importance of quenching as a means of permitting separate enhancers to function autonomously within a complex promoter. 10.1101/gad.8.15.1829 KW - dna-protein_interaction KW - drosophila KW - even-skipped_enhancer KW - pattern_formation KW - transcriptional_regulation AU - Gray, S AU - Szymanski, P AU - Levine, M PY - 1994/08/01/ UR - http://dx.doi.org/10.1101/gad.8.15.1829 ER -