FIG 9.
Swimming motility of ΔflaA and ΔflaACD mutants harboring plasmids carrying flaA and flaB alleles that impart altered helicity. Swim ring diameter of mutant A. tumefaciens derivatives. Results for the wild type, ΔflgE mutant, and ΔflaCD mutant are provided (black bars) for reference. Shown are the ΔflaA and ΔflaACD mutants (white bars), and derivatives harboring plasmids expressing FlaBCys or FlaBY129NCys and FlaACys or FlaAN129YCys expressed from Plac-PflaA (A) or from Plac-PflaB as well as the SD* mutation in the flaB Shine-Dalgarno sequence (B). Data are normalized to the wild type. Values are the averages for three swim plates per strain.