ArticleThe European physical journal. E, Soft matter2010
Intensities of DNA ion-phosphate modes in the low-frequency Raman spectra.
Article in The European physical journal. E, Soft matter, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Molecular dynamics study of collective water vibrations in a DNA hydration shell.European biophysics journal : EBJ · 2023Article
- Dynamics of KThe European physical journal. E, Soft matter · 2020Article
- Pattern preferences of DNA nucleotide motifs by polyamines putrescine2+, spermidine3+ and spermine4.Nucleic acids research · 2019Article
- Hydration of counterions interacting with DNA double helix: a molecular dynamics study.Journal of molecular modeling · 2018Article
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Authors and funding
2 authors.
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Abstract
The Raman intensities of counterion vibrations with respect to the phosphate groups of the double-helix backbone (ion-phosphate modes) in the low-frequency spectra (< 200 cm(-1)) of B -DNA with different alkali metal counterions have been calculated using the model for DNA conformational vibrations and the valence-optic approach. The results have showed that the spectra of DNA with heavy counterions (Rb(+) and Cs(+)) differ from the spectra of DNA with light counterions (Na(+) and K(+)). The calculated spectra of DNA with heavy counterions are characterized by intensive modes of ion-phosphate vibrations that form one united band near 115 cm(-1). Ion-phosphate modes in the spectra of DNA with light counterions are characterized by higher frequencies (near 180 cm(-1)) and much lower intensity. Our calculations explain why the modes of ion-phosphate vibrations are observed in Cs-DNA spectra rather than in Na-DNA. The determined sensitivity of the intensities of DNA low-frequency spectra to the counterion type proves the existence of the ion-phosphate modes.
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