Alternate view on thermal stability of the DNA duplex.
A concept, based on the changes in internal pressure of water due to addition of salts, has been used to interpret the thermal stability of the DNA duplexes. Dependence of thermal stability of duplexes on the salt concentrations has also been described in terms of variations in the internal pressure of water observed in presence of ionic components. The thermal stabilities at high external pressures (up to 200 MPa) compared to those at atmospheric pressure are linearly related to the corresponding variations in internal pressures at several salt concentrations.
Kumar
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Physical Chemistry Division, National Chemical Laboratory, Pune, India.
D001482:Base Composition; D004247:DNA / Q000737:chemistry*; D006358:Hot Temperature; D009691:Nucleic Acid Denaturation; D012492:Salts / Q000737:chemistry
D012492:Salts; D004247:DNA