Table 1.

Taxa used for analysis

Organism	Supergroup	Subgroup	URL
Homo sapiens	Opisthokonta	Metazoa	http://www.ncbi.nlm.nih.gov/BLAST
Nematostella vectensis	Opisthokonta	Metazoa	http://www.jgi.doe.gov/genome-projects
Drosophila melanogaster	Opisthokonta	Metazoa	http://www.ncbi.nlm.nih.gov/BLAST
Dictyostelium discoideum	Amoebozoa	Slime molds	http://www.ncbi.nlm.nih.gov/BLAST
Acanthamoeba castellanii	Amoebozoa	Acanthamoebae	http://blast.hgsc.bcm.tmc.edu/bcm/blast/
Arabidopsis thaliana	Archaeplastida	Chloroplastida	http://www.ncbi.nlm.nih.gov/BLAST
Chlamydomonas reinhardtii	Archaeplastida	Chloroplastida	http://www.jgi.doe.gov/genome-projects
Ostreococcus tauri	Archaeplastida	Chloroplastida	http://www.jgi.doe.gov/genome-projects
Galdieria sulphuraria	Archaeplastida	Rhodophyceae	http://genomics.msu.edu/galdieria
Toxoplasma gondii	SAR	Alveolata	http://www.ncbi.nlm.nih.gov/BLAST
Tetrahymena thermophila	SAR	Alveolata	http://www.ncbi.nlm.nih.gov/BLAST
Thalassiosira pseudonana	SAR	Stramenopiles	http://www.jgi.doe.gov/genome-projects
Phytophthora ramorum	SAR	Stramenopiles	http://www.jgi.doe.gov/genome-projects
Bigelowiella natans	SAR	Rhizaria	J.M. Archibald, Dacks, Klute, JGl unpublished results
Guillardia theta	CCTH	Cryptophyta	J.M. Archibald, Dacks, Klute, JGl unpublished results
Emiliania huxleyi	CCTH	Haptophyta	http://www.jgi.doe.gov/genome-projects
Trypanosoma brucei	Excavata	Discoba	http://www.ncbi.nlm.nih.gov/BLAST
Trichomonas vaginalis	Excavata	Metamonada	http://www.ncbi.nlm.nih.gov/BLAST

This table provides information for genome sequences searched by organism, supergroup, subgroup (as in Fig. 1B), and URL for the genome database accessed.