Cation-pi interactions: Difference between revisions
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| Cation-pi orbital interaction. Surfaces colored by electrostatic potential. Image adapted from one kindly provided by [http://www.its.caltech.edu/~dadgrp/research/molrec/index.html Dennis Dougherty]. | |||
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Cationic moieties, such as sidechain nitrogens (lysine or arginine) or metal cations, that are within 6.0 Å of the face of an aromatic ring (phenylalanine, tyrosine, or tryptophan) may engage in polar interactions called cation-pi orbital interactions (cation-π interactions). | Cationic moieties, such as sidechain nitrogens (lysine or arginine) or metal cations, that are within 6.0 Å of the face of an aromatic ring (phenylalanine, tyrosine, or tryptophan) may engage in polar interactions called cation-pi orbital interactions (cation-π interactions). | ||