NMR paper in Nature

G. Bouvignies, P. Vallurupalli, D.F. Hansen, B.E. Correia, O. Lange, A. Bah, R.M. Vernon, F.W. Dahlquist, D. Baker & L.E. Kay, "Solution structure of a minor and transiently formed state of a T4 lysozyme mutant," Nature 477 (2011) 111–114. http://dx.doi.org/10.1038/nature10349