1887

Abstract

By the analysis of the ATCC7966 genome we identified AH-3 MotY. MotY, like MotX, is essential for the polar flagellum function energized by an electrochemical potential of Na as coupling ion, but is not involved in lateral flagella function energized by the proton motive force. Thus, the polar flagellum stator is a complex integrated by two essential proteins, MotX and MotY, which interact with one of two redundant pairs of proteins, PomAB and PomAB. In an mutant, polar flagellum motility is restored by complementation, but the ability of the mutant to swim is not restored by introduction of the wild-type alone. However, its polar flagellum motility is restored when and are expressed together from the same plasmid promoter. Finally, even though both the redundant polar flagellum stators, PomAB and PomAB, are energized by the Na ion, they cannot be exchanged. Furthermore, PomAB and MotAB or MotCD are unable to restore swimming motility in polar flagellum stator mutants.

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2011-10-01
2020-07-15
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