Hydration states and metallic intercalation effects in dry DNA

Hiroshi Matsui; Mai Nagatori; Hirokazu Sakamoto; Kenji Mizoguchi; Naoki Toyota

doi:10.1016/j.jpcs.2009.12.007

Hydration states and metallic intercalation effects in dry DNA

Hiroshi Matsui, Mai Nagatori, Hirokazu Sakamoto, Kenji Mizoguchi, Naoki Toyota

SCI - Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Temperature dependence of the complex dielectric constant at 16.3 GHz has been measured on dry poly(dA)-poly(dT) DNA with Na⁺ counterions under different relative humidity (RH). The rotational motion of sole water dipoles hydrated in PO₂^- is detected at low RH, and the collective motion due to water network in major groove is successfully observed at high RH. From the infrared (IR) spectroscopy in dry DNA introducing metallic ions (M-DNA), the symmetric and antisymmetric stretching bands of PO₂^- distinctly depend on RH and type of metallic ions. The IR spectral change indicates that the monovalent ions (Li and Na) are arranged in PO₂^- though the divalent and trivalent ions connect to the base molecules.

Original language	English
Pages (from-to)	440-443
Number of pages	4
Journal	Journal of Physics and Chemistry of Solids
Volume	71
Issue number	4
DOIs	https://doi.org/10.1016/j.jpcs.2009.12.007
Publication status	Published - 2010 Apr 1

Keywords

A. Organic compounds
A. Polymer
C. Infrared spectroscopy
D. Dielectric properties

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/j.jpcs.2009.12.007

Cite this

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title = "Hydration states and metallic intercalation effects in dry DNA",

abstract = "Temperature dependence of the complex dielectric constant at 16.3 GHz has been measured on dry poly(dA)-poly(dT) DNA with Na+ counterions under different relative humidity (RH). The rotational motion of sole water dipoles hydrated in PO2- is detected at low RH, and the collective motion due to water network in major groove is successfully observed at high RH. From the infrared (IR) spectroscopy in dry DNA introducing metallic ions (M-DNA), the symmetric and antisymmetric stretching bands of PO2- distinctly depend on RH and type of metallic ions. The IR spectral change indicates that the monovalent ions (Li and Na) are arranged in PO2- though the divalent and trivalent ions connect to the base molecules.",

keywords = "A. Organic compounds, A. Polymer, C. Infrared spectroscopy, D. Dielectric properties",

author = "Hiroshi Matsui and Mai Nagatori and Hirokazu Sakamoto and Kenji Mizoguchi and Naoki Toyota",

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doi = "10.1016/j.jpcs.2009.12.007",

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journal = "Journal of Physics and Chemistry of Solids",

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TY - JOUR

T1 - Hydration states and metallic intercalation effects in dry DNA

AU - Matsui, Hiroshi

AU - Nagatori, Mai

AU - Sakamoto, Hirokazu

AU - Mizoguchi, Kenji

AU - Toyota, Naoki

PY - 2010/4/1

Y1 - 2010/4/1

N2 - Temperature dependence of the complex dielectric constant at 16.3 GHz has been measured on dry poly(dA)-poly(dT) DNA with Na+ counterions under different relative humidity (RH). The rotational motion of sole water dipoles hydrated in PO2- is detected at low RH, and the collective motion due to water network in major groove is successfully observed at high RH. From the infrared (IR) spectroscopy in dry DNA introducing metallic ions (M-DNA), the symmetric and antisymmetric stretching bands of PO2- distinctly depend on RH and type of metallic ions. The IR spectral change indicates that the monovalent ions (Li and Na) are arranged in PO2- though the divalent and trivalent ions connect to the base molecules.

AB - Temperature dependence of the complex dielectric constant at 16.3 GHz has been measured on dry poly(dA)-poly(dT) DNA with Na+ counterions under different relative humidity (RH). The rotational motion of sole water dipoles hydrated in PO2- is detected at low RH, and the collective motion due to water network in major groove is successfully observed at high RH. From the infrared (IR) spectroscopy in dry DNA introducing metallic ions (M-DNA), the symmetric and antisymmetric stretching bands of PO2- distinctly depend on RH and type of metallic ions. The IR spectral change indicates that the monovalent ions (Li and Na) are arranged in PO2- though the divalent and trivalent ions connect to the base molecules.

KW - A. Organic compounds

KW - A. Polymer

KW - C. Infrared spectroscopy

KW - D. Dielectric properties

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U2 - 10.1016/j.jpcs.2009.12.007

DO - 10.1016/j.jpcs.2009.12.007

M3 - Article

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VL - 71

SP - 440

EP - 443

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 4

ER -

Hydration states and metallic intercalation effects in dry DNA

Abstract

Keywords

ASJC Scopus subject areas

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