FIG. 4.

(A) Swimming ability of cells expressing TS PomA. The fractions of swimming cells expressing AAQQQ+L131F PomA alone in NMB190 (squares) or with PomB in NMB191 (circles) from the plasmid are shown. (B) Effect on swarm formation of the TS PomA mutation in VIO5 cells. Shown are swarms of VIO5 cells that harbor the vector only, a plasmid encoding wild-type PomA, and plasmids encoding AAQQQ+L131F or AAQQQ+T132M PomA. The cells were grown at 20°C for 10 h or 42°C for 2.5 h. vector*, NMB190 cells harboring vector (nonmotile control).