FIG. 2.

Features of the fusions employed in this study. (A) Parent and modified pilins; (B) pilin-alkaline phosphatase constructs (modified and unmodified); (C) parent and modified alkaline phosphatase. The cartoons show the relative sizes and orientations of construct components (gray boxes, PilA; white boxes, PhoA) as well as the modification site (black boxes). The protein product name is listed in the first column of each panel. The plasmid containing the gene expressing this protein is in the second. The third column shows essential features of the protein construct. Here, the C-terminal additions are in white with a black background. The PilA-PhoA junctions are shown in black with a gray background.