Table 2.

Thermodynamic data for the formation of conformational polymorphic structures of Apt(ATP) calculated for 100 nM Apt(ATP) + 100 mM NaCl solution and 5 mM MgCl₂ at 25 °C

Apt(ATP)	ΔG° kcal/mol	ΔH° kcal/mol	ΔS° cal/(mol K)	tm °C	K
Structure 1	− 1.7	− 22.30	− 69.09	49.6	17.7
Structure 2	− 1.31	− 25.70	− 81.80	41.0	9.14
Structure 3	− 1.06	− 26.90	− 86.67	37.2	5.99
Structure 4	− 0.99	− 23.30	− 74.83	38.2	5.32

Calculated using the UNAFold program