Complex Local Dynamics in DNA on the Picosecond and Nanosecond Time Scales
- 29 March 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 88 (15) , 158101
Abstract
Time-resolved Stokes shift measurements of the local structural relaxation of three DNA oligonucleotides are presented. Logarithmic relaxation is seen for over three decades in time (40 ps–40 ns), indicating a complex relaxation among a large number of conformational substates. The observed relaxation is the same in all the sequences. Sequence dependence of the localized dynamics of DNA does not appear within this time range. We infer that of the relaxation is faster than 40 ps, has a nonlogarithmic decay and has a sequence dependent amplitude.
Keywords
This publication has 26 references indexed in Scilit:
- Slow logarithmic relaxation in models with hierarchically constrained dynamicsPhysical Review E, 2001
- Ideal glass-glass transitions and logarithmic decay of correlations in a simple systemPhysical Review E, 1999
- Non-Arrhenius modes in the relaxation of model proteinsThe Journal of Chemical Physics, 1998
- Logarithmic Kinetics of the Amorphous-Amorphous Transformations inandGlasses under High PressurePhysical Review Letters, 1998
- Variational Approach to Relaxation in Complex Free Energy Landscapes: The Polymer Folding ProblemPhysical Review Letters, 1997
- Relaxation to Equilibrium in the Random Energy ModelEurophysics Letters, 1989
- Relaxation at the Angle of ReposePhysical Review Letters, 1989
- Dynamics in low temperature glasses: Theory and experiments on optical dephasing, spectral diffusion, and hydrogen tunnelingThe Journal of Chemical Physics, 1988
- Dispersive relaxation and spectral diffusion in a doped alcohol glass: the influence of sample agingChemical Physics Letters, 1987
- Spectral diffusion of a photochemical proton transfer system in an amorphous organic host: Quinizarin in alcohol glassThe Journal of Chemical Physics, 1984