Fig. 2From: Using phosphoproteomics data to understand cellular signaling: a comprehensive guide to bioinformatics resourcesNumber of substrates per kinase and phosphatase. a Number of substrates for the top 100 kinases in four databases. Substrates present in more than one database are colored black while the remaining sites are unique to each database. b Number of substrates for each phosphatase in DEPOD (yellow), HPRD (green), Phosphatome.Net (blue), or in more than one database (black)Back to article page