pARTs in distantly related species. pART relatives were identified by PSI-BLAST searches as in Figure 4. Matching sequences from other organisms were sorted by group on the basis of sequence similarity and associated domains. Accession numbers are given for pARTs from Homo sapiens (human), Mus musculus (mouse), Gallus gallus (chicken), Tetraodon nigroviridis (puffer fish), Drosophila melanogaster (fruit fly), Anopheles gambiae (malaria mosquito), Caenorhabditis elegans (nematode), Dictyostelium discoideum (slime mold), Gibberella zeae (ear root microfungus), Entamaoeba histolytica (amoeba), Arabidopsis thaliana (cress plant), Chilo iridescent virus and Bacteriophage Aeh1 (viruses), Pseudomonas aeruginosa, Corynebacterium diphtheriae and Vibrio cholerae (bacteria). Lower case letters in black indicate the pART designations used in Figure 8.