Figure 2

Effect of FliH and FliI deletion on the hook length control of the Salmonella flagellum. Electron micrographs of HBBs and histograms of hook length distribution of (a) SJW1103 (WT), (b) MMHI0117 (∆fliHI flhB*), (c) MMHI0117-1 [∆fliHI flhB* flhA(F459A)], (d) MMB017 (flhB*) and (e) MMA459 [flhA(F459A)]. Hook length was measured on electron micrographs recorded at a magnification of x5, 500, which corresponds to 2.75 nm per pixel. Scale bar, 100 nm.