"GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . . "4"^^ . . . . "Effect of Mg2+, Ca2+, Ni2+ and Cd2+ ions on parameters of DNA helix-coil transition in sodium cacodylate (pH 6.5), Tris (pH 8.5) and sodium tetraborate (pH 9.0) buffers have been studied by differential UV-visible spectroscopy and thermal denaturation. Anomalous behavior of the melting temperature Tm and the melting interval .delta.\u0422 in the presence of MgCl2 was observed in Tris, but not in cacodylate or tetraborate buffers. Decrease of the Tm and .delta.\u0422 of DNA in the presence of Ni2+ and Cd2+ was caused by preferential ion interaction with N7 of guanine. This type of interaction was also found for Mg2+ in Tris buffer. The anomalous decrease in the Tm and .delta.\u0422 values was connected to formation of complexes between metal ions and Tris molecules." . . "1"^^ . "International Journal of Biological Macromolecules" . . "RIV/61388963:_____/11:00361375!RIV12-AV0-61388963" . "Divalent metal ion effect on helix-coil transition of high molecular weight DNA in neutral and alkaline solutions" . "Divalent metal ion effect on helix-coil transition of high molecular weight DNA in neutral and alkaline solutions" . . "6"^^ . . "DNA melting; alkaline solution; metal complex; differential UV spectroscopy; thermal denaturation"@en . "195009" . "10.1016/j.ijbiomac.2010.12.016" . "Divalent metal ion effect on helix-coil transition of high molecular weight DNA in neutral and alkaline solutions"@en . . . . . . "P(GAP208/10/0559), Z(AV0Z40550506)" . "48" . "Andrushchenko, Valery" . "000288408500022" . "[F30E2913DC3F]" . "2" . "Valeev, V. A." . . "RIV/61388963:_____/11:00361375" . "Andrushchenko, Valery" . "Usenko, E. L." . "Effect of Mg2+, Ca2+, Ni2+ and Cd2+ ions on parameters of DNA helix-coil transition in sodium cacodylate (pH 6.5), Tris (pH 8.5) and sodium tetraborate (pH 9.0) buffers have been studied by differential UV-visible spectroscopy and thermal denaturation. Anomalous behavior of the melting temperature Tm and the melting interval .delta.\u0422 in the presence of MgCl2 was observed in Tris, but not in cacodylate or tetraborate buffers. Decrease of the Tm and .delta.\u0422 of DNA in the presence of Ni2+ and Cd2+ was caused by preferential ion interaction with N7 of guanine. This type of interaction was also found for Mg2+ in Tris buffer. The anomalous decrease in the Tm and .delta.\u0422 values was connected to formation of complexes between metal ions and Tris molecules."@en . . "Sorokin, V. A." . . . . "Divalent metal ion effect on helix-coil transition of high molecular weight DNA in neutral and alkaline solutions"@en . . "0141-8130" .