Putative gene family expansion assessed with the P. hawaiensis transcriptome. Gene families that were reported as expanded in the D. pulex genome  were examined for signatures of expansion in P. hawaiensis using the de novo transcriptome (see Methods). Gene families that appear particularly expanded in both crustaceans include chitinase (orange; KEGG EC number 188.8.131.52), adenosinetriphosphatase (red; KEGG EC number 184.108.40.206), 4-galactosyl-N-acetylglucosaminide 3-alpha-L-fucosyltransferase (green; KEGG EC number 220.127.116.11) and DNA-directed RNA polymerase (blue; KEGG EC number 18.104.22.168).
Zeng et al. BMC Genomics 2011 12:581 doi:10.1186/1471-2164-12-581