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Illustration of the subgraph (a) and (c) and LR subgraph (b) and (d) centralities of the amino acid residues of the chain A of SARS CoV-1 M of (top) and of SARS CoV-2 (bottom). The size of the nodes is proportional to the corresponding centrality normalized to its largest value in the protease analyzed. The colors also correspond to the same values in the jet color code, with red for higher values and blue for smaller values.
