This volume covers state-of-the-art applications of solid-state and solution nuclear magnetic resonance( NMR) spectroscopy to study protein structure, dynamics and interactions. Chapters detail various aspects of data acquisition and processing, determination of the structure, multi-timescale dynamics of entities ranging from individual proteins to large macromolecular complexes to intact viral assemblies. The final two chapters will highlight the promise of NMR beyond field strengths of 1 GHz to study the structure, dynamics and interactions of a larger class of proteins and protein complexes of extraordinary biological interest.  Written in the highly successful Methods in Molecular Biology series format, chapters provide detailed laboratory protocols and troubleshooting tips that would be of great practical help to NMR spectroscopists with different levels of expertise.