Figure 4.

Sliding in constructs with differing upstream sequences. The nucleotide and predicted amino acid sequences upstream of the slide site are shown for constructs L-16 and pXA-L16. Uppercase letters are used for L-16 and for positions in pXA that are identical, and lowercase letters are used for all positions that are different. Amino acids in boldface are target sites for enterokinase (in L-16) or factor X_a, (in pXA), the cut sites of which are shown by arrows. β-Galactosidase differential rates, in control cells and cells inhibited by ILHX (72 μg/ml), are quoted below each sequence [mean ± SE (no. replicates)] as in Table 1.