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Effect of low-molecular impurity on the melting of DNA-type macromolecules

✍ Scribed by A. M. Kosevich; V. L. Galkin; M. L. Polyakov

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
299 KB
Volume
16
Category
Article
ISSN
0020-7608

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✦ Synopsis

Abstract

Thermodynamics of the melting of a DNA‐type macromolecule is studied theoretically. Elements of the macromolecule are able to annex a low‐molecular impurity from the solvent (e.g., metal ions). Two models of the annexing of the impurity to the macromolecule are analyzed. It is shown that the concentration dependence of the helix‐coil phase transition temperature is describable by a non‐monotonic function in the case of certain relations between parameters.

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