Fig. 2
From: Identification and characterization of an R-Smad homologue (Hco-DAF-8) from Haemonchus contortus
Phylogenetic relationships of Haemonchus contortus Hco-DAF-8 with other R-Smads from selected species. The phylogenetic tree was constructed using amino acid sequences of Hco-DAF-8 and the R-Smad homologues from species, including six nematodes (Caenorhabditis brenneri, C. briggsae, C. elegans, C. japonica and Onchocerca volvulus), one arthropod (Drosophila melanogaster) and one chordate (Homo sapiens).The tree was constructed using the neighbour-joining (NJ) method, employing the Dm-DAD from D. melanogaster as an outgroup. Nodal support values are shown above or below the branches. Accession numbers are listed next to the R-Smad designation. Information on sequences used in the analysis is listed in Additional file 1: Table S2