I think the best source of such information is in books which you can probably find in your library: [Protein NMR Spectroscopy, Second Edition: Principles and Practice][1] by John Cavanagh, Wayne J. Fairbrother, Arthur G. Palmer III, Nicholas J. Skelton, Mark Rance [Fundamentals of Protein NMR Spectroscopy (Focus on Structural Biology)][2] by Gordon S. Rule, T. Kevin Hitchens) [Protein NMR Techniques (Methods in Molecular Biology)][3] by A. Kristina Downing. Cheers. [1]: http://www.amazon.com/Protein-NMR-Spectroscopy-Second-Principles/dp/012164491X [2]: http://www.amazon.com/Fundamentals-Protein-Spectroscopy-Structural-Biology/dp/1402034997/ [3]: http://www.amazon.com/Protein-Techniques-Methods-Molecular-Biology/dp/1588292460