Proton NMR Studies of Cucurbita maxima Trypsin Inhibitors: Evidence for pH-Dependent Conformational Change and His25-Tyr27 Interaction - Krishnamoorthi, Ramaswamy; Sun Lin, Chan-Lan; Gong, YuXi; VanderVelde, David; Hahn, Karl (Biological Magnetic Resonance Bank, 1999)