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. 2014 Mar 13;289(18):12842–12851. doi: 10.1074/jbc.M113.543546

TABLE 2.

Summary of kinetic and thermodynamic parameters for specific interactions

Dissociation constants (Kd values) were determined by ITC or SPR or both techniques. Values for the enthalpy (ΔH) and entropy (ΔS) changes and stoichiometry (n) were also determined for those interactions studied by ITC. Errors are from the fit.

Interaction Kd ΔH/kcal ΔS/cal n Method
kcal mol1 cal mol1 K1
rFnBPA(189–505)/FgD 3.7 ± 0.1 μm SPRa
rFnBPA(189–511)/FgD 1.5 ± 0.1 μm SPRa
AF1/Fg 1.1 ± 0.1 μm −6.1 ± 0.0 6.7 2.11 ITCb
AF1/Fn 0.359 ± 0.001 nm SPRb
AF1/FgD 1.5 ± 0.1 μm SPRb
AF1/NTD 0.393 ± 0.002 nm SPRb
AF1/NTD 0.7 ± 0.2 nm −35.8 ± 0.3 −78.1 0.89 ITCb

a The data are shown in Fig. 3.

b The data are shown in Fig. 6.