Modeling of heat absorption curves for ligand-competitor-DNA triple system

  • E. V. Dukhopelnikov A.Ya. Usikov Institute for Radiophysics and Electronics of NAS of Ukraine, 12 Acad. Proskury str., Kharkiv, 61085, Ukraine
Keywords: Theoretical models; competitive binding; calorimetry; melting temperature; binding parameters

Abstract

The model for a ligand-competitor-DNA triple system is suggested. The model is based on chemical equilibria equations and allows one to analyze DSC experimental data. It is shown that the competitor addition alters the percentage of ligand bound to DNA both at room temperatures and at temperatures close to the melting temperature of DNA. Given the same binding constants and binding sites determined at room temperatures, both qualitative and quantitative differences in calorimetric melting curves can be detected depending on the enthalpy of binding.

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Cited
How to Cite
Dukhopelnikov, E. V. (1). Modeling of heat absorption curves for ligand-competitor-DNA triple system. Biophysical Bulletin, 1(31), 49-58. Retrieved from https://periodicals.karazin.ua/biophysvisnyk/article/view/1581
Section
Methods of biophysical investigations