Transgenic construct used to characterize a silencer from the Ubx gene. Contains a reporter in which the 0.6kb Ubx embryonic PBX enhancer is fused upstream of the 2.8kb Ubx imaginal disc enhancer IDE which is linked to the proximal Ubx promoter followed by sequence encoding lacZ. A 0.96kb sub-fragment of a Ubx Polycomb group response element (PRE) has been inserted in between the PBX and IDE enhancers.
Construct: 0.96kb subfragment of UbxPRE1.6.