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Microcalorimetric investigation of dilute and concentrated solutions and films of the polydeoxynucleotide poly[d(A-T)·d(A-T)]

✍ Scribed by E. L. Andronikashvili; G. N. Mgeladze; J. R. Monaselidze; A. G. Lezius

Publisher
Wiley (John Wiley & Sons)
Year
1974
Tongue
English
Weight
280 KB
Volume
13
Category
Article
ISSN
0006-3525

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✦ Synopsis

Abstract

Microcalorimetric heat capacity measurements on dilute and concentrated solutions and films of poly[d(A‐T)·d(A‐T)] in 2 M sodium chloride have been carried out. Values for enthalpy, entropy, and temperature of the helix–coil transition have been found to depend on the polymer concentration, and to have maxima near 20% (w/w) of polymer. The results are discussed in terms of polynucleotide hydration as one of the structure stabilizing factors.

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