FIG 3.

Phylogenetic relatedness of the A. tumefaciens 5A ArsR proteins (shown in bold) and ArsR proteins from other bacteria. The neighbor-joining tree was generated using MEGA (version 6.06). Bootstrap values of >50 are shown and were generated from 1,000 samplings, with the archaean Pyrococcus furiosus ArsR protein designated as the outgroup. The scale bar shows the number of amino acid substitutions per site. Accession numbers are provided in parentheses. The asterisk denotes an ArsR protein encoded adjacent to a gene annotated as an lysR gene, as with arsR3 in A. tumefaciens 5A.