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.