Apicomplexan-specialized protein families. This figure shows the putative point of origin for each protein family within the Apicomplexa. The species membership for each protein family was used to determine the putative point of origin of protein families within the apicomplexan phylogeny. The number of protein families shared between at least two daughter taxa of a particular clade is circled at each node. On the terminal branches is the number of species-specific protein families, where a family contains at least two proteins. The number of singletons (not clustered in a family), total number of phylum-restricted proteins, and total number of proteins available are given after the species name. Whether a complete or partial genome is available for the species is designated with a Cg or Pg, respectively. The tree is a cladogram, and the construction of the phylogeny is described in the Methods section.
