Figure 1.
Phylogenetic tree of full length cephalochordate and vertebrate hsENOSF1β homologues. Protein sequences in Additional file 1 were aligned with MUSCLE and a guide tree was constructed automatically. C. intestinalis and C. savignyi are tunicates in the genus Ciona. P. abelli and P. pygmaeus are orang-utans in the genus Pongo.