Proceedings ArticleDOI
Hydration of native DNA: Ultrafast structural dynamics and short-range electric fields
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In this paper, two-dimensional infrared spectroscopy of backbone vibrations maps interactions of natural salmon DNA with its water shell, and fast fluctuations in the 300 fs regime are discerned from quasi-static disorder, establishing the short-range character of electrical interactions.Abstract:
Two-dimensional infrared spectroscopy of backbone vibrations maps interactions of natural salmon DNA with its water shell. Fast fluctuations in the 300 fs regime are discerned from quasi-static disorder, establishing the short-range character of electrical interactions.read more
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Journal ArticleDOI
Ultrafast memory loss and energy redistribution in the hydrogen bond network of liquid H2O
M. L. Cowan,Barry D. Bruner,Nils Huse,Jason R. Dwyer,B. Chugh,Erik T. J. Nibbering,Thomas Elsaesser,R. J. D. Miller +7 more
TL;DR: The results highlight the efficiency of energy redistribution within the hydrogen-bonded network, and that liquid water essentially loses the memory of persistent correlations in its structure within 50 fs.
Journal ArticleDOI
Hydration of the phosphate group in double-helical DNA
TL;DR: Water distributions around phosphate groups in 59 B-, A-, and Z-DNA crystal structures were analyzed and it was shown that the waters are concentrated in six hydration sites per phosphate and that the positions and occupancies are dependent on the conformation and type of nucleotide.
Journal ArticleDOI
Inter and Intrastrand Vibrational Coupling in DNA Studied with Heterodyned 2D-IR Spectroscopy
TL;DR: In this paper, the couplings and anharmonicities of cytidine and guanosine bases in DNA were studied using 2D-IR, frequency resolved photon echo, and pump−probe spectroscopies.
Journal ArticleDOI
Anharmonic Backbone Vibrations in Ultrafast Processes at the DNA-Water Interface.
TL;DR: The different interactions of limited strength ensure ultrafast vibrational relaxation and dissipation of excess energy in the backbone structure, processes that are important for the structural integrity of hydrated DNA.
Journal ArticleDOI
Ultrafast vibrational dynamics of the DNA backbone at different hydration levels mapped by two-dimensional infrared spectroscopy
TL;DR: Two-dimensional infrared spectroscopy of DNA backbone modes between 920 and 1120 cm−1 maps fluctuating interactions at the DNA surface to reveal a significant contribution of water to the fluctuating forces.