TY - JOUR
T1 - Power-law solvation dynamics in DNA over six decades in time
AU - Andreatta, Daniele
AU - Pérez Lustres, J. Louis
AU - Kovalenko, Sergey A.
AU - Ernsting, Nikolaus P.
AU - Murphy, Catherine J.
AU - Coleman, Robert S.
AU - Berg, Mark A.
PY - 2005/5/25
Y1 - 2005/5/25
N2 - Time-resolved Stokes shifts in a dye-containing oligonucleotide have been observed over the entire time range from 40 fs to 40 ns. The dynamics fit to a power law with a small exponent of 0.15. Similar relaxation has been seen in proteins but has not been anticipated in DNA. Distinct relaxation components due to specific subcomponents of the system, bulk water, bound water, counterions, backbone, bases, and so on, are not found. The various subcomponents may be so strongly coupled that their motions cannot be treated separately.
AB - Time-resolved Stokes shifts in a dye-containing oligonucleotide have been observed over the entire time range from 40 fs to 40 ns. The dynamics fit to a power law with a small exponent of 0.15. Similar relaxation has been seen in proteins but has not been anticipated in DNA. Distinct relaxation components due to specific subcomponents of the system, bulk water, bound water, counterions, backbone, bases, and so on, are not found. The various subcomponents may be so strongly coupled that their motions cannot be treated separately.
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U2 - 10.1021/ja044177v
DO - 10.1021/ja044177v
M3 - Article
C2 - 15898749
AN - SCOPUS:19744377205
SN - 0002-7863
VL - 127
SP - 7270
EP - 7271
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 20
ER -