Deletion of clpP or clpX in the minC deletion strain exacerbates cellular filamentation. ΔclpP ΔminC (JC0302), ΔclpX ΔminC (JC0292), ΔminC (JC0232), ΔclpP (JC0263), ΔclpX (JC0259), and wild-type (wt; MG1655) cells were grown at 30°C. Live cells were analyzed by DIC microscopy after growth for 3 h, 5 h, and 7 h as described in Materials and Methods. Arrows point to branches. Bars, 10 μm.