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Activation enthalpy (ΔH) and entropy (ΔS) for Na+ ion transport across PC/PG vesicle membranes by gA and phenylalanine analogs
| Gramicidin analog | ΔH≠ (kcal/mol) | ΔS≠ (e.u.) |
|---|---|---|
| Phe9-gA | 10.6 ± 0.3 | 7.5 ± 2.1 |
| Phe11-gA | 10.1 ± 0.4 | 6.5 ± 2.2 |
| Phe13-gA | 9.6 ± 0.3 | 5.5 ± 1.3 |
| Phe15-gA | 9.2 ± 0.2 | 5.0 ± 1.5 |
| Gramicidin A | 8.5 ± 0.2 | 4.2 ± 1.2 |
Data obtained from Easton (1989).
