The Shuttling Cascade in Lasso Peptide Benenodin-1 is Controlled by Non-Covalent Interactions. Author Hendrik Schröder, Michael Stadlmeier, Martin Wühr, A James Link Publication Year 2022 Type Journal Article Abstract The lasso peptide benenodin-1, a naturally occurring and bacterially produced [1]rotaxane, undergoes a reversible zip tie-like motion under heat activation, in which a peptidic wheel stepwise translates along a molecular thread in a cascade of "tail/loop pulling" equilibria. Conformational and structural analyses of four translational isomers, in solution and in the gas phase, reveal that the equilibrium distribution is controlled by mechanical and non-covalent forces within the lasso peptide. Furthermore, each dynamic pulling step is accompanied by a major restructuring of the intramolecular hydrogen bonding network between wheel and thread, which affects the peptide's physico-chemical properties. Keywords Peptides, Hydrogen Bonding, Molecular Conformation, Rotaxanes, Isomerism Journal Chemistry Volume 28 Issue 5 Pages e202103615 Date Published 2022 Jan 24 ISSN Number 1521-3765 DOI 10.1002/chem.202103615 Alternate Journal Chemistry PMCID PMC8792204 PMID 34797593 PubMedPubMed CentralGoogle ScholarBibTeXEndNote X3 XML