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. 2013 Aug 20;8(8):e72462. doi: 10.1371/journal.pone.0072462

Table 1. ITC Derived Thermodynamic Parameters for the binding of porphyrin ligands (TMPyP2, TMPyP3, and TMPyP4) to the 39Bcl-2 promoter sequence G-Quadruplex.

Ligand K1 ×10-5 ΔG1 (kcal/mol) ΔH1 (kcal/mol) -TΔS1 (kcal/mol) K2 ×10-5 ΔG2 (kcal/mol) ΔH2 (kcal/mol) -TΔS2 (kcal/mol)
TMPyP2 0.7 ± 0.5 -6.6 -0.6 ± 0.2 -6.0 - - - -
TMPyP3 2.6 ± 0.5 -7.4 -4.1 ± 0.1 -3.3 - - - -
TMPyP4 37.0 ± 4.0 -9.0 -4.2 ± 0.1 -4.7 0.9 ± 0.5 -6.7 -9.8 ± 0.1 -3.1