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Regions of a 13C DARR NMR spectrum of uniformly 13C-labeled WT medin fibrils. A, amide, aromatic, and aliphatic regions highlighting connectivities within the isoleucine spin system and the putative coupling between isoleucine Ile35 and/or Ile36 and tryptophan Trp11 and/or Trp21. B, aromatic region highlighting tentative assignments for the tryptophan spin system.
