Figure 2.

The overexpression of TolQ uniquely results in cell filamentation. Stained preparations of W3110 cells bearing plasmids carrying either the tolA (ptolA), tolR (ptolR), or tolQ (ptolQ) gene under the control of the pBAD promoter grown for 24 h at 37°C with aeration in Miller LB supplemented with 100 μg mL⁻¹ ampicillin and either no l-arabinose or 0.1% (w/v) l-arabinose are shown. All panels are displayed at the same relative magnification, with a bar representing 10 μm provided in each panel for scale. The arrows in the lower right side panel highlight examples of possible septal formation.