Fig. 2

Ortholog distribution of the predicted regulator families. a Proportion of families that contain proteins from one, two, three or four species in all the families and in the predicted transcriptional regulator families generated by OrthoMCL [109]. b-d Ortholog distribution of the predicted regulator families in Arabidopsis (b), fruit fly (c), and human (d) using data from Ensembl Genomes [50] to classify taxon specificity of the candidate families within each taxonomic domain