Table 1.
Swimming behavior of B. burgdorferi cheY mutants
| Strain | Mean velocity (μm/s) ± SDa | Mean no. of reversals/min ± SDa |
|---|---|---|
| Wild type | 10.0 ± 0.8 | 20.0 ± 1.2b |
| cheY1 mutant | 8.6 ± 1.8 | 18.5 ± 1.5 |
| cheY2 mutant | 11.0 ± 1.4 | 19.0 ± 2.1 |
| cheY3 mutant | 10.5 ± 1.7 | 0.0c |
| cheY3+ mutant | 9.5 ± 0.8 | 25.0 ± 1.5d |
| cheY1 cheY2 mutant | 10.8 ± 2.3 | 21.0 ± 3.0 |
| cheY1 cheY3 mutant | 11.7 ± 2.9 | 0.0c |
| cheY2 cheY3 mutant | 10.1 ± 1.8 | 0.0c |
| cheY1 cheY2 cheY3 mutant | 11.7 ± 1.8 | 0.0c |
a
Standard deviations were calculated from data obtained from at least 10 individual tracked cells of each strain.
b
In the 20 reversals that occurred in the wild type during a 1-min interval, a prolonged flex lasting more than 0.5 s occurred 6 to 10 times.
c
Cells ran in only one direction and did not reverse.
d
In the cheY3+ mutant, all 25 reversals were accompanied by a flex lasting more than 0.5 s.