FIG 6.

Phylogenetic tree for the most similar TP0037 homologs. The top 100 matches from a BLAST search of sequence databases using the sequence of TP0037 were culled of duplicates, aligned, and scrutinized for phylogenetic relationships as described in Materials and Methods. Organism names represent TP0037-like proteins from the respective bacteria. The organism names shown on a pink background harbored a directly adjacent (presumably co-operonic) gene encoding a TP0038-like protein. Shown at the lower left is a scale indicating the amino acid substitutions per site.