A 1.2kb XhoI-NotI fragment corresponding to the minimal Fab-7 boundary element.
Consists of a 1231bp PstI-ApaI fragment including the Fab-7 insulator.
Construct: 1.2kb Fab-7 DNA fragment that spans nucleotide positions 84,594 to 83,423 within the complete BX-C sequence and contains all three DNaseI hypersensitive sites.