Effects of Sulfoxide and Sulfone Sidechain-Backbone Hydrogen Bonding on Local Conformations in Peptide Models.
Chemical communications(2024)
摘要
We examine peptide model systems designed to probe short-range N-H⋯OS sidechain-backbone hydrogen bonding involving amino acid residues with sidechain sulfoxide or sulfone functional groups and its effects on local conformations. A strong 7-membered ring hydrogen bond of this type accompanies an intra-residue N-H⋯OC interaction and stabilizes an extended backbone conformation in preference to classical folded structures.
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