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Various β-peptide helix motifs. From left to right: β314 helix from crystal structure22, energy minimized β314 3.0 helix, β314 QM minimized β314 helix73, β312 helix77, β310 helix76. Note the direction of the carbonyl groups in the β312 helix. Side-chain and hydrogen atoms omitted for clarity. α-helix shown for comparison at right.
