Skip to main content
. 2023 Jul 19;122(16):3323–3339. doi: 10.1016/j.bpj.2023.07.009

Table 1.

Thermodynamics for dissociation of AA from templates determined with global fitting to a three-state sequential model

Sequence Method Tm (°C)a ΔHd° (kJ mol−1) ΔSd° (J mol−1 K−1) ΔGd8° (kJ mol−1)b
TTg:AA IRc 26 ± 2 91 ± 2 245 ± 6 21.7 ± 1.1
NMR 28 ± 3 79 ± 5 203 ± 20 21.5 ± 4.5
ITCd 83 ± 5 23.1 ± 1.3
UUg:AA IRc 24 ± 1 56 ± 1 131 ± 3 19.2 ± 0.6
ITCd 51 ± 1 23.5 ± 0.4
TTo:AA IRc 5 ± 1 67 ± 1 182 ± 4 16.1 ± 0.8

Errors are derived from 95% confidence intervals in fit parameters ΔHd° and ΔSd°. ΔHd° and the dissociation free energy at 8°C (ΔGd8°) from ITC measurements are also listed, where errors correspond to 95% confidence intervals from two-state fits (supporting material, Section 4.2).

a

Tm is defined as the temperature where half of the total AA concentration is bound to the template.

b

Free energy change for AA dissociation at 8°C.

c

IR refers to global fits of FTIR and 2D IR temperature series.

d

ITC was performed at 8°C.