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PCA analysis. (A) RMSIP matrix calculated for each pairwise comparison of the single replicates, using the conformational space described by the first 10 PCs. The RMSIP values are highlighted by a color gradient, from blue to red. (B) Cumulative percentage of the variance described by the first ten PCs. The first three (or five) PCs account together for more than 50% (or 70%) of the global motions of the domain.
