Yuri P Blagoi

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Differential UV spectroscopy and thermal denaturation were used to study the Mg(2+) ion effect on the conformational equilibrium in poly A.2 poly U (A2U) and poly A . poly U (AU) solutions at low (0.01 M Na(+)) and high (0.1 M Na(+)) ionic strengths. Four complete phase diagrams were obtained for Mg(2+)-polynucleotide complexes in ranges of temperatures(More)
Differential UV spectroscopy was used to study the temperature dependence of the conformational equilibrium in aqueous poly I . poly A . poly I (A2I) solutions containing Na+ (0.1-2 M) and Mg2+ (10(-5)-0.005 M) ions. Over the whole range of the studied Na+ and Mg2+ concentrations, the heating-induced destruction of the triple A2I helix is actually the A2I(More)
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