Before revision: Recently it has been revealed that the equilibrium hydrogen-bond breathing dynamics of terminal base pairs in short DNA exhibit a power-law relaxation similar to that in the time-resolved Stokes shift experiments with an intercalated coumarin probe.
After revision: Anomalous non-exponential relaxation in hydrated biomolecules is commonly attributed to the complexity of the free-energy landscapes, similarly to polymers and glasses. It was found recently that the hydrogen-bond breathing dynamics of terminal base pairs in short DNA exhibit a power-law relaxation similar to that in the time-resolved Stokes shift experiments with an intercalated coumarin probe.