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Turner 2004

Hairpin Loops

Example 3

 

 

example structure        

∆G°37 = ∆G°37(Watson-Crick Pairs) + ∆G°37(Hairpin Loop)

 

∆G°37 = ∆G°37(Watson-Crick Pairs) + ∆G°37(CcgagG)

 

∆G°37 = ∆G°37(CG followed by AU) + ∆G°37(AU followed by CG) + ∆G°37(CG followed by CG) + ∆G°37(CcgagG)

 

∆G°37 = 2.11 kcal/mol 2.24 kcal/mol 3.26 kcal/mol + 3.5 kcal/mol

 

∆G°37 = –4.1 kcal/mol

 

∆H° = ∆H°(Watson-Crick Pairs) + ∆H°(Hairpin Loop)

 

∆H° = ∆H°(Watson-Crick Pairs) + ∆H°(CcgagG)

 

∆H° = ∆H°(CG followed by AU) + ∆H°(AU followed by CG) + ∆H°(CG followed by CG) + ∆H°(CcgagG)

 

∆H° = 10.44 kcal/mol 11.40 kcal/mol 13.39 kcal/mol 6.6 kcal/mol

 

∆H° = –41.8 kcal/mol