title: High-resolution 39K NMR spectroscopy of bio-organic solids.
abstract: We report the first implementation of the multiple-quantum magic-angle-spinning method to obtain high-resolution (39)K NMR spectra for bio-organic solids. The observed spectral resolution in the isotropic dimension is nearly at the sub-ppm level, which approaches the intrinsic resolution limit determined primarily by quadrupole relaxation. We show that high-resolution solid-state (39)K NMR spectroscopy can be used as a new means of probing K(+) ions in biomolecular systems.
authors.affiliation: Department of Chemistry, Queen's University, Kingston, Ontario, Canada K7L 3N6. gang.wu@chem.queensu.ca
authors.forename: Gang
authors.initials: G
authors.lastname: Wu
authors.forename: Zhehong
authors.initials: Z
authors.lastname: Gan
authors.forename: Irene C M
authors.initials: IC
authors.lastname: Kwan
authors.forename: James C
authors.initials: JC
authors.lastname: Fettinger
authors.forename: Jeffery T
authors.initials: JT
authors.lastname: Davis
mesh_terms: D003460:Crystallization; D054856:G-Quadruplexes; D005958:Glucosephosphates / Q000737:chemistry; D008958:Models, Molecular; D019906:Nuclear Magnetic Resonance, Biomolecular / Q000379:methods*; D010851:Picrates / Q000737:chemistry
chemical_list: D005958:Glucosephosphates; D010851:Picrates