Phylogenetic analysis of dsRBM proteins. The neighbor-joining tree is based on alignment of the tandem dsRBM domains. The Tribolium genome contains two R2D2-like proteins (Tc-R2D2 and Tc-C3PO) while Drosophila has only one. PACT , TRBP2 [136,137], and DGCR8  were included as human counterparts.
Tomoyasu et al. Genome Biology 2008 9:R10 doi:10.1186/gb-2008-9-1-r10