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. 2003 Apr;185(8):2432–2440. doi: 10.1128/JB.185.8.2432-2440.2003

FIG. 2.

FIG. 2.

Induction of cpxP during growth is CpxA independent. β-Galactosidase activities were measured for PAD282, PAD292, and PAD414 in panel A and for PAD282, PAD292, and PAD455 in panel B. Stationary-phase samples were grown overnight (black bars), subcultured to LB broth, and grown for 2.5 h to mid-log phase (gray bars). The Cpx pathway is induced by growth phase (compare lanes 1 and 2 in panels A and B) in a manner that is dependent on CpxR (lanes 3 and 4 in panels A and B) but not CpxA (compare lanes 5 and 6 to 1 and 2 in panel A). Induction during growth also occurs in the cpxA24 mutant background (compare lanes 5 and 6 to 1 and 2 in panel B). WT, wild type.