Structural and energetic study of cation-π-cation interactions in proteins.

@article{Pinheiro2017StructuralAE,
  title={Structural and energetic study of cation-$\pi$-cation interactions in proteins.},
  author={Silvana Pinheiro and Ignacio Soteras and Josep Llu{\'i}s Gelp{\'i} and François Dehez and Christophe Chipot and F. Javier Luque and Carles Curutchet},
  journal={Physical chemistry chemical physics : PCCP},
  year={2017},
  volume={19 15},
  pages={
          9849-9861
        }
}
Cation-π interactions of aromatic rings and positively charged groups are among the most important interactions in structural biology. The role and energetic characteristics of these interactions are well established. However, the occurrence of cation-π-cation interactions is an unexpected motif, which raises intriguing questions about its functional role in proteins. We present a statistical analysis of the occurrence, composition and geometrical preferences of cation-π-cation interactions… 
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