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. 2008 Feb 24;36(7):2379–2394. doi: 10.1093/nar/gkn082

Table 3.

Entropies (in kcal/mol) for 100-ns simulation time for ‘all atoms’ and ‘backbone’ of the four sequences considered here (central 16mer)

All atom Backbone


PARMBSC0 CHARMM27 PARMBSC0 CHARMM27
SEQ1 3.74 3.60 2.33 2.17
SEQ2 3.65 3.63a 2.26 2.21a
SEQ3 4.07 3.55 2.27 2.18
SEQ4 3.61 3.44 2.31 2.15

aBase pair flipping occurs in the first base pair of the central 16-mer (T·A) in CHARMM27 calculations (A flips out while T remains stacked, this is induced by the terminal G·C being frayed). Take this value with caution.