Figure 5

Na⁺ dependent motor function of E. coli cells producing MotA and chimera MotB proteins.

Rotation speeds of E. coli (ΔmotAB) cells producing chimeric stators with the MotA-A225D mutation (MotA^Aa(A225D)/MotB₁^AE for (A) and MotA^Aa(A225D)/MotB₂^AE for (B)) or the native E. coli stator (C) were measured in various Na⁺ concentrations as noted.