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(a) Cβ-Hβ and (b) Cγ-Hγ zooms of the 13C-HSQC spectra for all glutamines scanned in H46. (c) Zoom of the 15N-HSQC spectra showing the side chain NεH2 region. The color code is equivalent to the one used in Figs. 1 and 3 in the main text.