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Crystals 2015, 5(4), 475-490; doi:10.3390/cryst5040475

Role of Water Molecules to the Electronic States of M-DNA

Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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Authors to whom correspondence should be addressed.
Academic Editor: Martin T. Lemaire
Received: 20 September 2015 / Revised: 6 October 2015 / Accepted: 10 October 2015 / Published: 20 October 2015
(This article belongs to the Special Issue High Spin Molecules)
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Abstract

Various kinds of roles of the water molecules in the electronic states of the complexes of metal ions (M) and deoxyribonucleic acid (DNA) are reviewed. Divalent metal ions M like Fe, Mn, Zn and so on, form Metal-DNA complexes (M-DNA) with each metal ion between the bases of a base pair of DNA. The electronic states of the complexes depend on the species of ions in M-DNA. Metal ions in Fe-DNA and Mn-DNA possess 3d magnetic moments, but those in Zn-DNA do not. Interestingly, the magnetic property of the complexes, especially the magnetic interaction between the metal ions, is dominated by water molecules in the complexes. In Fe-DNA, the water molecules play a role of ligands for the iron ions, which controls the spin states of Fe3+, whereas they govern the magnetic interaction between the Mn2+ ions in Mn-DNA. In contrast, Zn-DNA has no 3d magnetic moment, but the water molecules dominate the bonding states of the Zn ions and the magnetic states of the Zn-DNA system. View Full-Text
Keywords: DNA; metal ions; M-DNA; water molecules; magnetic property; ESR; SQUID DNA; metal ions; M-DNA; water molecules; magnetic property; ESR; SQUID
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Mizoguchi, K.; Sakamoto, H. Role of Water Molecules to the Electronic States of M-DNA. Crystals 2015, 5, 475-490.

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