Table 2.

Effect of MalE-CsgA on motility parameters of single wt and csgA cells

Protein added	Gliding speed, μm/min*		Duration of gliding interval, min*		Duration of stop interval, min*		Stop frequency, stop/min*		Reversal frequency, reversal/min*
	wt	csgA	wt	csgA	wt	csgA	wt	csgA	wt	csgA
MalE-CsgA†	1.99 ± 0.23	1.82 ± 0.09	4.05 ± 0.77	4.12 ± 0.40	2.91 ± 0.69	2.30 ± 0.52	0.17 ± 0.03	0.18 ± 0.05	0.14 ± 0.02	0.17 ± 0.03
MalE†	n.d.	0.73 ± 0.11	n.d.	1.54 ± 0.46	n.d.	3.13 ± 0.23	n.d.	0.58 ± 0.06	n.d.	<0.07

The mean values and standard errors of the mean are shown for three independent experiments. Strains used: wt, DK5204; csgA, DK5253. n.d., not determined. 

^*See Table 1. 

^†1.0 Cfu of MalE-CsgA protein was added to the cells. MalE was added to a final concentration equivalent to that of MalE-CsgA protein in μg/ml.