Figure 2: A phylogenetic tree illustrating the inferred evolutionary relationship of the ZDS family of proteins. The tree was generated based on the alignment of the ZDS-Fc amino acid sequence with published plant ZDS protein sequences, and was inferred using the Neighbor-Joining method. The Gene- Bank accession numbers for the amino acid sequences are in parenthesis, the percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches [23]. The tree is drawn to scale, with branch lengths in the same units as those of the evolutionary distances used to infer the phylogenetic tree.