Figure 3

Example of phylogenetic identification of false orthologs. Neighbor-Joining tree of the AraR homologs using Aspergillus nidulans XlnR as an outgroup. The genes marked in yellow were maintained in the comparison. AN10550 was manually removed, as it clearly did not fall into the same cluster as the other genes. In fact, this gene is GalR, which is unique to A. nidulans. The gene identifiers can be found in Additional file 7.