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23Na NMR Studies of Na-DNA in the solid state

✍ Scribed by Heyong He; Jacek Klinowski; Giuseppe Saba; Mariano Casu; Adolfo Lai

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 253 KB
Volume: 10
Category: Article
ISSN: 0926-2040
DOI: 10.1016/s0926-2040(97)00059-3

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✦ Synopsis

23 Na MAS, CPrMAS and quadrupole nutation NMR spectra and the 23 Na spin-lattice relaxation times in Na-DNA with Ž 2q w Ž . x 2q . and without competing species Mg , ethidium bromide and Ru phen reveal the presence of two sodium sites with 3 different NMR parameters. While in the presence of Mg 2q , sodium resides far from the surface of the DNA molecule, w Ž . x 2q ethidium bromide and Ru phen displace sodium closer towards the surface.

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