EM images of FtsZ polymerisation at different time points.

<p>FtsZ (11 µM) was incubated in the polymerisation buffer (pH = 6.5) for 15 minutes prior to the addition of GTP (0.2 mM). At the indicated times the reaction was stopped and the samples were negatively stained by the addition of 1% uranyl acetate. Scale bar represents 0.2 µm for ×75,000 magnification and 100 nm for ×120,000 magnification.