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Representative configuration of the MTSL-Cys-Aβ42 ensemble, showing increased side-chain interactions between MTSL-Cys and Leu34 and Met35, which contributes to a more collapsed structural ensemble and β-strand pairings (darker shade) between residues 29–32and 36–38. This new β-structure is present in negligible amounts in the untagged peptide. Chimera ((73); University of California, San Francisco) was used to generate the molecular graphics. To see this figure in color, go online.
