Three-Dimensional 15N-1H-1H and 15N-13C-1H nuclear-magnetic resonance studies of HPr a central component of the phosphoenolpyruvate-dependent phosphotransferase system from Escherichia coli - van Nuland, Nico A.J.; van Dijk, Alard A.; Dijkstra, Klaas; van Hoesel, Frans H.J.; Scheek, Ruud M.; Robillard, G. T. (Biological Magnetic Resonance Bank, 1995)