Journal
BIOPOLYMERS
Volume 84, Issue 1, Pages 23-37Publisher
WILEY
DOI: 10.1002/bip.20391
Keywords
beta-amino acid; conformational analysis; GROMOS simulation package; hairpin turn; helix; molecular dynamics simulation; NMR; beta-peptide; gamma-peptide; secondary structure; torsion angle
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The principal secondary structural motifs adopted by peptides assembled from beta-amino acid units are discussed: the 14-, 12, 10, 12/10-, and 8-helices, as well as the hairpin turn, extended structures, stacks, and sheets. Features that promote a particular folding propensity are outlined and illustrated by structures determined in solution (NMR) and in the solid-state (x-ray). The N-CbetaCalpha-CO dihedral angles from molecular dynamics simulations, which are indicative of a particular secondary structure, are presented. A brief description of a helix and a turn of gamma-peptides is also given. (C) 2005 Wiley Periodicals, Inc.
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