Figure 6.
Dynamic correlation between secondary structure elements Cij (Eq. 7). Native and nonnative elements of secondary structure are in black and red, respectively. Different timescales for secondary structure formation suggest a folding mechanism compatible with the framework model. The curve H represents the autocorrelation within the poly-Ala α-helix, while S1S2 (N-terminal β-hairpin), S3S4 (C-terminal β-hairpin), S1S4 (N/C-terminal two-stranded parallel β-sheet), as well as the nonnative arrangements S1S3, S2S4, and S2S3, reflect the association of poly-Thr β-strands.