Single deletion within the ftz 430bp autoregulatory element (AE) that removes binding sites A1-3, this deleted upstream region drives lacZ expression from a minimal Hsp70 promoter.
AE enhancer element of ftz regulatory region from base pair 2224 to base pair 2574 governing expression of lacZ from a minimal Hsp70 promoter (enhancer element coordinates refer to location within ftz upstream element, FBrf0048801).