Fig. 3

Backbone dynamics and secondary structure population of repetitive domains. a {1H}–15N heteronuclear NOE of the 15-mer. b Secondary structure population of the 15-mer based on backbone chemical shifts. Overlapping peaks in {1H}–15N heteronuclear NOE spectra were not included in the {1H}–15N heteronuclear NOE graph of the 15-mer. %SS denotes % secondary structure. Error bars in {1H}–15N heteronuclear NOE graph was calculated based on base plane noise in the 1H–15N HSQC spectra with and without proton saturation (equation 3)