TY JOUR TI Thermodynamic potentials of the ideal gas of nonlinear conformational perturbations - kinks activated in the ring plasmid pTTQ18 KW plasmid pTTQ18 KW DNA kinks KW statistics of the ensemble of kinks KW statistical sum KW free energy KW entropy JO Russian Journal of Biological Physics and Chemisrty AU Krasnobaeva, L.A. AU Yakushevich, L.V. PY 2020 IS 5 PB Federal State Educational Institution of Higher Education Sevastopol State University