CD spectra of NS conformers. (a) Far UV CD spectra of native (gray circles), cleaved (red circles), latent (green circles) and polymeric (blue circles) NSs; continuous black curves are the best fitting to the data. (b) Secondary structure contents reported as number of residues (#) or as overall residue percentage (%), resulting from CD spectra fitting, for native (gray bars), cleaved (red bars), latent (green bars) and polymer (blue bars) NSs.