Abstract
β-Polypeptides are known to adopt helical secondary structure in organic solvents, even for rather short chain lengths. It is investigated whether a short α-polypeptide with amino-acid side chains that enable β-peptides to adopt helical structures, can maintain or adopt stable helical structure in methanol or in water. The molecular dynamics simulations do not predict a particular fold, which indicates an essential role for the additional methylene moiety in the backbone of β-peptides regarding helix stability.
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