Fig. 1

Distribution of shortest-path distances in the pairs of proteins sharing functions. This figure illustrates the shortest path length distribution of protein pairs with common functions and proteins pairs that do not share any function. The curve is plotted by short-path distances between proteins on the horizontal axis and the proportion of pairs of proteins on the vertical. The red round curve describes the relationship between pairs of proteins with common functions and the short path distances between them, and the blue rectangle curve depicts that of pairs of proteins without common functions