Table 1 Characteristics of L-Arg stimulated ion channel activity of the three enrichment steps compared with the same parameters from the native L-Arg stimulated channels as reported by Kumazawa et al.*
Sample | +Unitary Conductance pS | Concentration of L-Arg, μM | Concentration of D-Arg, μM | Cation-anion selectivity |
|---|---|---|---|---|
RCA-I lectin column material | 58 ± 5 |  |  | ---- |
Sephacryl S300 column material | 66 ± 3 | 1 – 50 | 10 – 200 | Weak cation (PNa/PCl = 2.2) |
Ion-exchange column material | 73 ± 7 |  |  | -- |
Ion Channels from Taste Tissue | 40 – 60 75–100 | 1 – 200 | 10 – 200 | Cation |