Izuchenie metodami IK- i Ramanovskoǐ spektroskopii vzaimodeǐstviia DNK s ionami medi

Kornilova, S. V. and Kapinos, L. E. and Tomkova, A. and Mishkovskiĭ, P. and Blagoĭ, Iu. P. and Bol'bukh, T. V.. (1994) Izuchenie metodami IK- i Ramanovskoǐ spektroskopii vzaimodeǐstviia DNK s ionami medi. Biofizika, 39 (3). pp. 423-436.

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DNA with Cu2+ ions in solution and films is studied by IR and Raman spectroscopy at different relative humidities (R.H. = 51 divided by 98%). DNA complexed with Cu2+ ions is shown to transit to the double-helix conformation, passing A-form, the water content per nucleotide (n) being essentially larger: 12 for Cu2+/P = 0.4 (n = 8 for DNA without ions). Cu2+ decrease the biopolymer hydration at R.H. 50-76% interactions with Cu2+ are stated to depend on the hydration degree of macromolecules. The analysis of the absorption band shifts of Raman spectra evidences the changes in the base torsion angle around the glycoside bond to the values characteristic of the syn-conformation and the interaction both with phosphates and nitrogen bases.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Structural Biology & Biophysics > Nanobiology Argovia (Lim)
UniBasel Contributors:Kapinos Schneider, Larisa E. E
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Izdatel'stvo Nauka
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Nov 2017 10:00
Deposited On:22 Nov 2017 10:00

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