Figure 3.—

(A) The sequence of the Su(Hw) insulator isolated from the gypsy retrotransposon (Marlor et al. 1986). The 12 core binding sites are boxed. The underlining indicates the sequence of the nucleotide used to produce the synthetic Su(Hw)-binding regions. The consensus for the Su(Hw)-binding site was taken from Scott et al. (1999). The arrows indicate the sequence of the 8–12 Su(Hw)-binding sites. (B) Schematic of the Su(Hw) and Mod(mdg4)-67.2 proteins in mutations and constructions used in this study.