Figure 4From: Structural deformation upon protein-protein interaction: A structural alphabet approachLocal structure composition of the interface set. a) Percentage of each type of structural letter, in the complex set (white) and the interface set (gray). b) Z-score to assess the significance of over- or under-representation of the structural letters in the interface. Dashed lines indicate the threshold for statistical significance (-3.1 and 3.1).Back to article page