TABLE 2.
Effects of different potassium salts on PPi-driven proton transport in permeabilized procyclic trypomastigotes of T. bruceia
| Potassium salt | PPi-dependent H+ transport (ΔA493–530/min × 103) | % of control |
|---|---|---|
| KCl (control) | 39.2 ± 2.2 | 100 |
| Potassium gluconate | 38.8 ± 2.7 | 99 |
| K2SO4 | 48.7 ± 4.0 | 124 |
| KNO3 | 35.4 ± 3.9 | 90 |
| KHCO3 | 32.5 ± 3.9 | 90 |
a
Proton transport was assayed by using acridine orange, as described in Materials and Methods, in the standard buffer described in the legend to Fig. 1B except that KCl was replaced with the other salts. The values are means ± SEs of three experiments.