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HDX-MS to measure residual structure in peptides. The exchange of two peptides compared to the predicted exchange rate is shown in (A) and (B). The predicted rates from kch are shown in dashed lines. (C,D) Exchange rates for predigested peptides (open circles) and peptide from intact protein (triangles) are compared directly to assess transient structure in the protein. Reproduced with permission from ref (66). Copyright 2017 American Chemical Society.
