Charge-Based Interactions between Peptides Observed as the Dominant Force for Association in Aqueous Solution


  • We thank Leighton Coates (Oak Ridge National Laboratory) and Thomas Splettstoesser (University of Heidelberg) for help with graphical representations and Christopher Stanley (Oak Ridge National Laboratory) for useful discussions. JCS was funded by Laboratory Research and Development funds provided by the US Department of Energy.


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What's the attraction? The structures of three dipeptides in aqueous solutions were investigated by using a combination of neutron diffraction and computer simulation. In each solution, peptide association was dominated by charge–charge rather than hydrophobic interactions (see the representative snapshot of the peptide/water box for glycyl-L-alanine; the water molecules are depicted by red crosses.)