Permeability ratios (PK/PCl) of channels
| Channel | 100 mM KCl | 250 mM KCl |
| WT (PA63)7 | 22.2 | 9.1 |
| (PA63E302S)7 | 17.5 | 8.9 |
| (PA63E343S)7 | 20.8 | 8.7 |
| (PA63D276S)7 | 20.8 | 8.3 |
| (PA63D335S)7 | 15.4 | 8.2 |
| (PA63E308S)7 | 14.7 | 7.7 |
| (PA63D315S)7 | 12.2 | 6.5 |
| (PA63F427A)7 | 9.5 | 4.6 |
| Channel | 100 mM KCl | 250 mM KCl |
| WT (PA63)7 | 22.2 | 9.1 |
| (PA63E302S)7 | 17.5 | 8.9 |
| (PA63E343S)7 | 20.8 | 8.7 |
| (PA63D276S)7 | 20.8 | 8.3 |
| (PA63D335S)7 | 15.4 | 8.2 |
| (PA63E308S)7 | 14.7 | 7.7 |
| (PA63D315S)7 | 12.2 | 6.5 |
| (PA63F427A)7 | 9.5 | 4.6 |
Permeability ratios (PK/PCl) of channels, calculated by applying the GHK equation to the cation selectivity profiles of each channel with [KCl]trans = 100 and 250 mM KCl. Numbers represent PK/PCl.