Effect of ethanol on structural transitions of DNA and polyphosphates under Ca2plus ions action in mixed solutions

• Autorzy: Hackl E. V. , Blagoi Y.P.
• Języki publikacji: EN

Abstrakty

EN

In the present work using the IR spectroscopy method the effect of ethanol on structural transitions of DNA and polyphosphates under the action of Ca2+ ions in mixed solutions containing ethanol (0-25 vol.%) was studied. It was shown that, on its interaction with Ca2+ ions, in aqueous and mixed solutions DNA becomes transformed into compact form. With the increase of concentration of ethanol the degree of Ca2+-induced DNA compactisation rises. It was found that, in mixed solutions containing ethanol, Ca2+-induced DNA compactisation depends not only on the solution's dielectric permeability but also on the solution structure. On stabilisation of the water structure in the presence of low ethanol concentrations a stabilisation of the DNA macromolecule occurs that leads to the increase of the Ca2+ ion concentration necessary for DNA compactisation. Comparison of the effects of ethanol on Ca2+-induced structural transitions in DNA and polyphosphates in mixed solvents permits to suppose that at alcohol concentrations in solution resulting in disruption of the water spatial structure, some peculiarities are observed in the behavior of those molecules whose hydrophobic interactions are essential.

Słowa kluczowe

EN

ethanol; replication; polyphosphate; interaction; equilibrium; nucleic acid; DNA interaction; DNA transcription; metal ion; calcium ion; DNA

• Wydawca: -
• Czasopismo: Acta Biochimica Polonica
• Rocznik: 2000
• Tom: 47
• Numer: 1
• Opis fizyczny: p.103-112,fig.

Twórcy

autor

Hackl E. V.

• National Academy of Sciences of Ukraine, 47 Lenin Ave., 310164 Kharkov, Ukraine

autor

Blagoi Y.P.

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