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End-to-end distance distributions obtained from molecular dynamics simulations of peptides containing 10, 15, 20, 25, 30, 35, or 40 proline residues plus terminal glycine and cysteine residues (black lines) and the least-squares fits to a worm-like chain model (red lines) using Eq. 3. (Inset) The values for lc (filled circles) and lp (open circles) resulting from the fits are shown for the different peptide lengths.
