Dynamics of Cations around DNA and Protein as Revealed by ²³Na Diffusion NMR Spectroscopy.

ABSTRACT: Counterions are vital for the structure and function of biomolecules. However, the behavior of counterions remains elusive due to the difficulty in characterizing mobile ions. Here, we demonstrate that the dynamics of cations around biological macromolecules can be revealed by ²³Na diffusion nuclear magnetic resonance (NMR) spectroscopy. NMR probe hardware capable of generating strong magnetic field gradients enables ²³Na NMR-based diffusion measurements for Na⁺ ions in solutions of biological macromolecules and their complexes. The dynamic properties of Na⁺ ions interacting with the macromolecules can be investigated using apparent ²³Na diffusion coefficients measured under various conditions. Our diffusion data clearly show that Na

SUBMITTER: Yu B 

PROVIDER: S-EPMC8829827 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature