Helix handedness inversion in arylamide foldamers: Elucidation and free energy profile of a hopping mechanism

Ara M. Abramyan, Zhiwei Liu, Vojislava Pophristic

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

We report the first atomistic level description of the handedness inversion mechanism for helical arylamide foldamers. The key process in the handedness inversion is the simultaneous unfolding and folding of two adjacent aryl-aryl linkages, propagating from a helix terminus along the strand. Intermediates along the inversion pathway have a common feature-a single unfolded aryl-aryl linkage (through Caryl-Camide rotation) connecting two helical segments of opposite handedness. This explicit solvent metadynamics study also provides thorough quantitative free energy information for each step of the previously uncharacterized inversion pathway.

Original languageEnglish (US)
Pages (from-to)669-672
Number of pages4
JournalChemical Communications
Volume52
Issue number4
DOIs
StatePublished - 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • General Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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