∆G°37 coaxial stack =
∆G°37(Continuous Backbone Stack) + ∆G°37(Discontinuous Backbone Stack)
∆G°37 coaxial stack = ∆G°37(AU pair followed by GG mismatch) + ∆G°37(Discontinuous Backbone Stack)
∆G°37 coaxial stack= –0.8 kcal/mol – 2.1 kcal/mol
∆G°37 coaxial stack= –2.9 kcal/mol