Table 1.
Estimated resistance, ion current, ion flux, and resulting ion disequilibrium assuming Ohm’s law (for a DC voltage of 1 µV generated by E = 200 V/m) or maximal possible flux in file.
| Ion X | Conductance GX [pS] |
Resistance RX [GΩ] |
Current IX [fA] for 1 µV |
Flux (out/in) NX [s−1] for 1 µV |
Ion content in cell ΣX |
Relative ion loss/increase 106 × NX/ΣX |
Drift velocity vX [μm/s] |
Max flux (in file) vX/dX [s-1] |
|---|---|---|---|---|---|---|---|---|
| K+ | 235 | 4.3 | 0.23 | 1.500 out | 5 × 1010 | 0.03 | 15.2 | 38.000 |
| Na+ | 144 | 6.9 | 0.14 | 900 in | 2 × 109 | 0.45 | 10.4 | 20.800 |
| Cl− | 174 | 5.7 | 0.17 | 1.100 in | 2 × 109 | 0.54 | 15.8 | 39.500 |
| Ca2+ | 3 | 323 | 0.003 | 19 in | 3 × 104 | > 100 | 12.3 | 30.800 |
| H+ | 0.002 | 6 × 105 | 2 × 10–6 | 10–2 in | 3 × 104 | 0.37 | 72.5 | 120.800 |
GX: Conductance of channel for ion X; RX: Resistance of channel for ion X; IX: Current of ion X through channel (according to Ohm’s law); NX: Ion flux (number of ions X transported through channel per second); ΣX: Total number of ions X in the cell; 106 × NX/ΣX: Relative ion loss/increase per treatment using the amplification factor 106 (see text); vX: Drift velocity of ion X; dX: hydration radius of ion X (Table 2); vX/dX: maximum flux for moving in file.