Figure 4From: In Helicobacter pylori auto-inducer-2, but not LuxS/MccAB catalysed reverse transsulphuration, regulates motility through modulation of flagellar gene transcriptionMutation of luxS Hp causes altered flagellin and hook protein production. Cell lysates of the strains indicated were subjected to immunoblotting with anti-flagellin (FlaA and FlaB) and anti-hook protein (FlgE) together [32]. The proteins were measured in wild-type, ΔluxSHp, ΔluxSHp+ cultures grown in Brucella broth at 37°C for 24 h. H. pylori strain 17874 wild-type [29] served as the positive control. Mutants in flaA (a kind gift from Paul O'Toole) and flgE [30] derived from this strain (17874ΔflaA and 17874ΔflgE) served as negative controls for identifying FlaA and FlgE, respectively.Back to article page