A Looplike Secondary Structure Uncovered in a Family of Peptoid Hexamers.
Peptoids, or N-substituted glycine oligomers, are a unique class of biomimetic foldamers. Peptoid oligomers are indeed capable of adopting well-defined ordered structures despite their intrinsic flexibility, which is primarily attributable to the cis/trans isomerism of the main chain tertiary amide bonds. Controlling t...