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. 2015 Apr 20;10(4):e0123146. doi: 10.1371/journal.pone.0123146

Table 5. Relative energies of the three helical structures of Ac-Ala-Ala-Ala-NHMe by MP2/6–311(1d,1p) quantum calculations in vacuo.

Energy/Eh Relative Energy/ kcal
classic α-helix -988.0102 1.958
Némethy-, N- or 3.613/10-helix -988.0134 0.00
“dynamic” -988.0126 0.501