Dependence of Bacterial Chemotaxis on Gradient Shape and Adaptation Rate
Figure 5
Chemotactic properties of cells at different adaptation rates in constant-activity gradients.
(A) Drift velocity of cells in the constant-activity gradient N2 as a function of adaptation rate. The horizontal axis shows the adaptation rate k relative to the wild type (logarithmic scale). Gray lines show standard deviations. (B) Maximal drift velocities (black) and the corresponding optimal adaptation rates (blue) as a function of gradient steepness. The steepness of the constant-activity gradients was changed over a 64-fold range, as described in the section ‘Model of the environment’.