Large-scale analysis of phosphorylation site occupancy in eukaryotic proteins

► Phosphorylation occupancy is higher in both the termini of protein sequences. ► The majority of phosphorylated sites occur in close proximity of each other. ► Distribution probabilities of phosphorylated sites show a highly non-random nature. ► More than 50% of phosphorylated sites fall within a small number (40) of motifs.