Fig. 6From: Evolutionary history of phosphatidylinositol- 3-kinases: ancestral origin in eukaryotes and complex duplication patternsDomain composition of class IA regulatory proteins. The schematic phylogenetic tree on the left corresponds to the complete tree of Fig. 2. The presence of the p110 binding domains in non Osteichthyes sequences was assessed using Batch CD-search and are indicated with asterisks (*). Box sizes are not relative to the real length of the domainsBack to article page