Biopolymers and cell. 1989. Volume 5. № 5. 31 - 37

A. T. Karapetyan, P. 0. Vardevanyan, M. D. Frank-Kamenetskii

THE EFFECT OF [Na+] IONS CONCENTRATION ON THE ENTHALPY OF DNA HELIX-COIL TRANSITION

Summary

    The enthalpy (AH) of the helix-coil transition of different QC-content DNAs is obtained by means of the «tie calorimetry» and «areas» methods. The data obtained experimentally show that the slope of the dependence of AH on lg[Na+] decreases with an increase of the GC-content of DNA.