TABLE 3.
Ion channel properties of E. aerogenes porinsa
| Porin | Conductance (pS) in:
|
Critical voltage(s) (mV) | Ion selectivity | |
|---|---|---|---|---|
| 1 M KCl | 0.2 M KClb | |||
| Omp 35 | 1,430 ± 90 | 400 ± 30 | 130 ± 9, −150 ± 6 | 4 ± 0.5 |
| Omp 36 | 1,000 ± 10 | 260 ± 10 | ±170c | 4 ± 0.8c |
a
The conductance properties, ion selectivity (PK/PCl) and voltage sensitivity in asolectin lipid bilayers of the two MOMPs were determined. Selectivity ratios were calculated for an electrolyte gradient of 1 M/0.1 M (cis/trans).
b
Data obtained by the patch-clamp procedure.
c
Data obtained from reference 9.