∆G°37 =
∆G°37(Watson-Crick Pairs) + ∆G°37 intermolecular initiation + ∆G°37(Internal Loop)
∆G°37 = ∆G°37(CG followed by AU) + ∆G°37(CG followed by GC) + ∆G°37 intermolecular initiation+ ∆G°37(2×2 Internal Loop)
∆G°37 =
–2.11 kcal/mol – 2.36 kcal/mol +4.09 kcal/mol – 1.1 kcal/mol
∆G°37 =
–1.5 kcal/mol
Note that the internal loop lookup tables account for terminal AU pairs that are adjacent to internal loops.