FIG. 2.

Effects of various EpsL-ExeL chimeras on secretion. (A) Schematic representation of EpsL, ExeL, and EpsL-ExeL chimeras and their effects on secretion in the V. cholerae epsL mutant in the absence and presence of exeE and the A. hydrophila exeL mutant in the absence and presence of epsE. Secretion is presented as a percentage of the total toxin produced in cultures grown without IPTG induction. (B) The wt EpsL protein, in which the species-specific EpsE and EpsM binding domains are shown as cross-hatched boxes. aa, amino acids.