Table I.
Current amplitude ratios for AtHKT1 of monovalent cations relative to Na+
| Cation | Percentage of Na+ Current Amplitude |
|---|---|
| % | |
| Li+ | 1.6 ± 0.25 |
| Na+ | 100 |
| K+ | 3.3 ± 0.66 |
| Rb+ | 3.5 ± 0.42 |
| Cs+ | 1.6 ± 0.60 |
Values represent means ± sd of currents measured at −120 mV and relative to the Na+ current amplitude, which was defined as 100% for each oocyte. Data obtained from four oocytes were averaged.