Figure 2.

Phylogenetic tree of the lipase/feruloyl esterase family (experimental data). This phylogenetic tree was constructed by integrating functionally described proteins. Green and yellow boxes show lipases and (type-A) feruloyl esterases (experimental data), respectively. The scale-bar represents the number of changes per position per unit of branch length. Red boxes represent gene duplication events. The bootstrap values (green numbers at nodes) are given for the three methods when the three trees share an identical node (NJ, MP, ML, respectively). Branch b is considered as the foreground branch for branch-site models.