Nuclear magnetic resonance as a quantitative tool to study interactions in biomacromolecules

S. Grzesiek, M. Allan, F. Cordier, D. Haeussinger, Pernille Rose Jensen, J. Kahmann, S. Meier, H. J. Sass

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

High-resolution nuclear magnetic resonance (NMR) has emerged as one of the most versatile tools for the quantitative study of structure, kinetics, and thermodynamics of biomolecules and their interactions at atomic resolution. Traditionally, nuclear Overhauser enhancements (NOEs) and chemical shift perturbation methods are used to determine molecular geometries and to identify contact surfaces, but more recently, weak anisotropic orientation, anisotropic diffusion, and scalar couplings across hydrogen bonds provide additional information. Examples of such technologies are shown as applied to the quantitative characterization of function and thermodynamics of several biomacromolecules. In particular, (1) the structural and dynamical changes of the TipA multidrug resistance protein are followed upon antibiotic binding, (2) the trimer-monomer equilibrium and thermal unfolding of foldon, a small and very efficient trimerization domain of the 14 phagehead, is described in atomic detail, and (3) the changes of individual protein hydrogen bonds during thermal unfolding are quantitatively followed by scalar couplings across hydrogen bonds.
Original languageEnglish
JournalPure and Applied Chemistry
Volume77
Issue number8
Pages (from-to)1409-1424
ISSN0033-4545
DOIs
Publication statusPublished - 2005
Externally publishedYes

Keywords

  • Anisotropic orientation
  • Biomacromolecules
  • Biomolecular interactions
  • Foldon
  • Hydrogen bonds
  • Protein dynamics
  • Protein folding
  • Scalar coupling
  • Thermal unfolding
  • TipA
  • CHEMISTRY,
  • biomolecular interactions
  • protein folding
  • thermal unfolding
  • hydrogen bonds
  • scalar coupling
  • anisotropic orientation
  • protein dynamics
  • foldon

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