Table 2. Thermodynamic parameters of NCoR RID binding to REV-ERBβ LBD.
Apo LBD | +Heme LBD | ||
WT RID | ΔID2 RID | WT RID | |
KD (nM) | Site 1: 12 (95% *CI: 1.4 to 56) |
130 (95% CI: 100 to 180) |
99 (95% CI: 46 to 460) |
Site 2: 740 (95% CI: 380 to 1500) | |||
ΔG (kcal/mol) | Site 1: −10.8 (95% CI: −12.1 to −9.9) |
−11.1 (95% CI −11.5 to −10.8) |
−9.6 (95% CI: −10.0 to −8.6) |
Site 2: −8.4 (95% CI: −8.8 to −8.0) | |||
ΔH (kcal/mol) | Site 1: −8.3 (95% CI: −9.1 to −7.7) |
−9.4 (95% CI −9.6 to −9.2) |
1.7 (95% CI: 1.4 to 2.0) |
Site 2: 3.2 (95% CI: 2.4 to 4.6) | |||
†TΔS (kcal/mol) |
Site 1: 2.5 (95% CI: 2.2 to 3.0) |
−1.8 (95% CI −1.9 to −1.6) |
11.2 (95% CI: 10.7 to 11.4) |
Site 2: 12 (95% CI: 11 to13) |
*CI calculated using SEDPHAT analysis software.
†Temperature (T), which was constant at 25°C, and entropy (ΔS) of binding.