Construct: 2.3kb BglII-XhoI fragment from the 5' region of N that contains N-fa-swb-INS sequences.
The N-fa-swb-INSBglII-XhoI fragment shows enhancer blocking activity. It does not function as a silencer. The N-fa-swb-INSBglII-XhoI fragment can insulate w reporter genes from both positive and negative position effects.
The N-fa-swb-INSBglII-XhoI fragment shows enhancer blocking activity. It does not function as a silencer. The N-fa-swb-INSBglII-XhoI fragment can insulate w reporter genes from both positive and negative position effects.