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Sodium cation complexation behavior of the heteroaromatic sidechains of histidine and tryptophan
Jiaxin Hu1, Leonard J Barbour, Riccardo Ferdani
1Division of Bioorganic Chemistry, Bioorganic Chemistry Program, Department of Molecular Biology & Pharmacology, Washington University School of Medicine, 660 South Euclid Ave., Campus Box 8103, St. Louis, MO 63110, USA.
Chemical Communications (Cambridge, England)
|September 26, 2002
Abstract:
Three of the four essential amino acids that have aromatic sidechains exhibit cation-pi interactions with Na+ or K+; histidine does not and is shown here to be a sigma donor.