Table 2. Thermodynamic binding parameters of HCB and HCB ΔG1247-F1250 (mean ± SD of n = 4 (HCB—Syt-II) or n = 2 (others) replicate measurements).
Interaction | ΔH°(kJ/mol) | –TΔS° (kJ/mol at 25°C) | ΔG° (kJ/mol at 25°C) | KD (nM at 25°C)b |
---|---|---|---|---|
HCB—Syt-IIa | -30.9 | -11.2 | -42.2 | 34 |
HCB—Syt-II | –30.3 ±0.7 | –7.9 ±0.7 | –38.27 ±0.02 | 190 ±15 |
HCB—Syt-II nanodiscs | –58.4 ±0.2 | 18.99 ±0.03 | –39.4 ±0.2 | 140 ±14 |
HCB ΔG1247-F1250 –Dual-receptor nanodiscs | –61 ±10 | 22 ±10 | –39.5 ±0.4 | 120 ±31 |
HCB—Dual-receptor nanodiscs | –14 ±10 | –32 ±9 | –47.8 ±0.1 | 4.4 ±0.3 |