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. 2011 Sep 8;7(9):e1002268. doi: 10.1371/journal.pgen.1002268

Figure 3. Group B genes encode structural components of the motility machinery.

Figure 3

(A) Motility at the gltA-Hand gltK deletion mutants colony edges after 48h incubation at 32°C on hard (1.5%) (upper panel). Lower left panel: twitching motility is unaffected in the gltA-H and gltK deletion mutants and observed in the form of expanded colony swarms on soft (0.5%). Lower right panel: motility of double pilA gltA-H and pilA gltK deletion mutants showing the complete absence of motility in these mutants. (B) Hard agar colony edges of the gltD frzE, gltD frzE pilA and aglZ frzE pilA mutants showing the lack of motility restoration in the gltD mutant. Note that single cells are clearly visible in the aglZ frzE pilA mutant, consistent with previous literature [24].