Metal-Chelated Polymer Nanodiscs for NMR Studies.

ABSTRACT: Paramagnetic relaxation enhancement (PRE) is commonly used to speed up spin lattice relaxation time (T₁ ) for rapid data acquisition in NMR structural studies. Consequently, there is significant interest in novel paramagnetic labels for enhanced NMR studies on biomolecules. Herein, we report the synthesis and characterization of a modified poly(styrene-co-maleic acid) polymer which forms nanodiscs while showing the ability to chelate metal ions. Cu²⁺ -chelated nanodiscs are demonstrated to reduce the T₁ of protons for both polymer and lipid-nanodisc components. The chelated nanodiscs also decrease the proton T₁ values for a water-soluble DNA G-quadruplex. These results suggest that polymer nanodiscs functionalized with paramagnetic tags can be us

SUBMITTER: Hardin NZ 

PROVIDER: S-EPMC6861636 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature