This figure summarizes the results of Wilcoxon Ranksum test. Here 4 random set of HIV-1–human protein pairs are generated. The size of 4 random sets is retained same as the size of predicted set of Tastan et al., Doolittle et al., Mukhopadhyay et al., and our present study. This is repeated for 500 times and overlaps between each pair of sets is calculated. The p-values shown in figure signify the result of Wilcoxon ranksum test between this random overlaps and the real overlaps.