Many unanswered questions remain about how macromolecules in solution perturb the water molecules in which they are immersed. Scientists used neutron scattering to provide an experimental description of the dynamical perturbation of water molecules surrounding proteins in solution, which play an important role in protein function and stability. Quantifying the magnitude of the perturbation of water around the green fluorescent protein (GFP), they found a systematic length-scale dependence of the dynamical retardation factor compared to the perturbation of bulk water. The findings deepen the understanding of water perturbation, which is of practical interest to researchers in food science, personal care, pharmaceutics, and protein dynamics.
Perticaroli, S., et al. “Description of Hydration Water in Protein (Green Fluorescent Protein) Solution.” J. Am. Chem. Soc.139(3), 1098–1105 (2017). [DOI:10.1021/jacs.6b08845].
Instruments and Facilities Used: Neutron scattering at Center for Structural Molecular Biology and Spallation Neutron Source at Oak Ridge National Laboratory.