Equilibrium parameters of spermine block before and after modification of dimeric channel constructs
| Equilibrium parameter | Unmodified | MTSEA | MTSET |
| Kir2.1*-176C | |||
| K1(*103 M−1) | 12 ± 1 | 10 ± 2 | 9.6 ± 0.7 |
| K2 | 200 ± 40 | 3.6 ± 0.5 | 130 ± 30 |
| zδ1 | 0.37 ± 0.02 | 0.44 ± 0.04 | 0.41 ± 0.04 |
| zδ2 | 4.2 ± 0.3 | 2.1 ± 0.1 | 4.5 ± 0.2 |
| Kir2.1*-169C | |||
| K1(*103 M−1) | 10 ± 1 | 10 ± 3 | 7 ± 2 |
| K2 | 210 ± 30 | 8 ± 3 | 5 ± 2 |
| zδ1 | 0.36 ± 0.02 | 0.43 ± 0.03 | 0.33 ± 0.03 |
| zδ2 | 4.2 ± 0.3 | 2.7 ± 0.2 | 2.0 ± 0.3 |
| Equilibrium parameter | Unmodified | MTSEA | MTSET |
| Kir2.1*-176C | |||
| K1(*103 M−1) | 12 ± 1 | 10 ± 2 | 9.6 ± 0.7 |
| K2 | 200 ± 40 | 3.6 ± 0.5 | 130 ± 30 |
| zδ1 | 0.37 ± 0.02 | 0.44 ± 0.04 | 0.41 ± 0.04 |
| zδ2 | 4.2 ± 0.3 | 2.1 ± 0.1 | 4.5 ± 0.2 |
| Kir2.1*-169C | |||
| K1(*103 M−1) | 10 ± 1 | 10 ± 3 | 7 ± 2 |
| K2 | 210 ± 30 | 8 ± 3 | 5 ± 2 |
| zδ1 | 0.36 ± 0.02 | 0.43 ± 0.03 | 0.33 ± 0.03 |
| zδ2 | 4.2 ± 0.3 | 2.7 ± 0.2 | 2.0 ± 0.3 |