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. 2004 Aug 1;18(15):1898–1907. doi: 10.1101/gad.1209404

Table 2.

Energy of DNA bending and twisting for the antiparallel loops

Etotal Etwist Ebend
Linear DNA + GalR
   AL1 loop 26.0 6.4 21.2
   AL2 loop 28.0 7.6 22.2
Linear DNA + GalR + HU bound to hbs (+6.5)
   AL1 loop 9.4 8.7 5.8
   AL2 loop 25.5 14.9 13.6

Values for the loops formed by transient interaction of operator-bound GalR dimers were calculated as described in Materials and Methods. Energy values (kcal/mole) obtained in the presence of HU, bound at hbs (+6.5), are as described in Geanacopoulos et al. (2001).