Figure 4.

Phylogenetic tree of sequences shown in Fig. 3. The tree is based on the alignment of the conserved DNA-binding domain encoded by the last exon of the Spi sequences. Genetic distances were measured from the proportion of amino acid identity of the aligned sequences and the tree was drawn by using the neighbor-joining method of Saitou and Nei (30). The human ELF5 sequence is taken as an outgroup. Numbers above each node indicate the percentage recovery of that node in 500 bootstrap replications.