Selected ubiquitous genes flanking Antp complex: Taf1 (left) and alphaTub84B (right). Need to clone and make probes for these at some point.
Look at maintenance of gene activation –how to keep a gene on. Does it require enhancer looping. How about enhancer looping at the engrailed locus?
en promoter-LacZ fusions dropped into tou and even the next gene over (some 300 kb away) still drive en stripes.