FIG. 2.

Phylogeny of As3mt protein sequences in Eukarya, Archaea, and Bacteria. The phylogenetic tree was constructed with the maximum parsimony method using the PAUP* 4.0 b10 program. The statistical significance of branch order (numbers on branches) was estimated by the generation of 1000 replications of bootstrap resampling of the originally aligned amino acid sequences. The deduced amino acid sequence of arsenite S-adenosyl methyltransferase (YP_182128) from the bacterium Dehalococcoides ethenogenes was used as a root sequence. Scale bar indicates the number of amino acid changes among the aligned sequences.